diff --git a/BotSharp.Core/Abstractions/IBotPlatform.cs b/BotSharp.Core/Abstractions/IBotPlatform.cs
index df6ee8bd..a07c4198 100644
--- a/BotSharp.Core/Abstractions/IBotPlatform.cs
+++ b/BotSharp.Core/Abstractions/IBotPlatform.cs
@@ -1,4 +1,5 @@
-using BotSharp.Core.Models;
+using BotSharp.Core.Agents;
+using BotSharp.Core.Models;
 using Newtonsoft.Json.Linq;
 using System;
 using System.Collections.Generic;
@@ -8,6 +9,13 @@ namespace BotSharp.Core.Engines
 {
     public interface IBotPlatform
     {
+        /// <summary>
+        /// Load agent profile
+        /// </summary>
+        /// <param name="id">agentId, clientAccessToken, developerAccessToken</param>
+        /// <returns></returns>
+        Agent LoadAgent(string id);
+
         AIResponse TextRequest(AIRequest request);
 
         void Train();
diff --git a/BotSharp.Core/Engines/BotEngineBase.cs b/BotSharp.Core/Engines/BotEngineBase.cs
index 47c6c544..345da2c1 100644
--- a/BotSharp.Core/Engines/BotEngineBase.cs
+++ b/BotSharp.Core/Engines/BotEngineBase.cs
@@ -31,11 +31,6 @@ namespace BotSharp.Core.Engines
             DbInitializerPath = $"{Database.ContentRootPath}App_Data{Path.DirectorySeparatorChar}DbInitializer{Path.DirectorySeparatorChar}";
         }
 
-        /// <summary>
-        /// Load Agent
-        /// </summary>
-        /// <param name="id">agentId, clientAccessToken, developerAccessToken</param>
-        /// <returns></returns>
         public Agent LoadAgent(string id)
         {
             if (agent == null)
diff --git a/BotSharp.RestApi/ConversationController.cs b/BotSharp.RestApi/ConversationController.cs
deleted file mode 100644
index 98786113..00000000
--- a/BotSharp.RestApi/ConversationController.cs
+++ /dev/null
@@ -1,13 +0,0 @@
-using Microsoft.AspNetCore.Mvc;
-using System;
-using System.Collections.Generic;
-using System.Text;
-
-namespace BotSharp.RestApi
-{
-    [Route("v1/[controller]/[action]")]
-    public class ConversationController : ControllerBase
-    {
-
-    }
-}
diff --git a/BotSharp.RestApi/Dialogs/DialogController.cs b/BotSharp.RestApi/Dialogs/DialogController.cs
new file mode 100644
index 00000000..85487baf
--- /dev/null
+++ b/BotSharp.RestApi/Dialogs/DialogController.cs
@@ -0,0 +1,62 @@
+using BotSharp.Core.Engines;
+using BotSharp.Core.Models;
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Mvc;
+using Newtonsoft.Json.Linq;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace BotSharp.RestApi.Dialogs
+{
+    /// <summary>
+    /// Conversation controller
+    /// </summary>
+    [Route("v1/[controller]")]
+    public class DialogController : ControllerBase
+    {
+        private readonly IBotPlatform _platform;
+
+        /// <summary>
+        /// Initialize dialog controller and get a platform instance
+        /// </summary>
+        /// <param name="platform"></param>
+        public DialogController(IBotPlatform platform)
+        {
+            _platform = platform;
+        }
+
+        /// <summary>
+        /// The query endpoint is used to process natural language in the form of text. 
+        /// The query requests return structured data in JSON format with an action and parameters for that action.
+        /// </summary>
+        /// <param name="request"></param>
+        /// <returns></returns>
+        [AllowAnonymous]
+        [HttpPost("/v1/query")]
+        public ActionResult<AIResponse> Query([FromBody] QueryModel request)
+        {
+            String clientAccessToken = Request.Headers["Authorization"];
+            if (String.IsNullOrEmpty(clientAccessToken))
+            {
+                return Unauthorized();
+            }
+
+            var config = new AIConfiguration(clientAccessToken, SupportedLanguage.English);
+            config.SessionId = request.SessionId;
+
+            _platform.LoadAgent(clientAccessToken);
+
+            var aIResponse = _platform.TextRequest(new AIRequest
+            {
+                Timezone = request.Timezone,
+                Contexts = request.Contexts.Select(x => new AIContext { Name = x }).ToList(),
+                Language = request.Lang,
+                Query = new String[] { request.Query }
+            });
+            
+            return aIResponse;
+        }
+    }
+}
diff --git a/BotSharp.RestApi/Dialogs/QueryModel.cs b/BotSharp.RestApi/Dialogs/QueryModel.cs
new file mode 100644
index 00000000..d08257df
--- /dev/null
+++ b/BotSharp.RestApi/Dialogs/QueryModel.cs
@@ -0,0 +1,27 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.Text;
+
+namespace BotSharp.RestApi.Dialogs
+{
+    public class QueryModel
+    {
+        public List<String> Contexts { get; set; }
+
+        public String Event { get;set; }
+
+        public String Lang { get; set; }
+
+        /// <summary>
+        /// User says
+        /// </summary>
+        [Required]
+        public String Query { get; set; }
+
+        [Required]
+        public String SessionId { get; set; }
+
+        public String Timezone { get; set; }
+    }
+}
diff --git a/BotSharp.WebHost/Settings/app.json b/BotSharp.WebHost/Settings/app.json
index 497ba711..b86eafa8 100644
--- a/BotSharp.WebHost/Settings/app.json
+++ b/BotSharp.WebHost/Settings/app.json
@@ -1,3 +1,4 @@
 {
-  "Assemblies": "BotSharp.Core"
+  "Assemblies": "BotSharp.Core",
+  "BotPlatform": "ApiAi"
 }
diff --git a/BotSharp.WebHost/Startup.cs b/BotSharp.WebHost/Startup.cs
index 509ac10f..4a160690 100644
--- a/BotSharp.WebHost/Startup.cs
+++ b/BotSharp.WebHost/Startup.cs
@@ -1,10 +1,13 @@
 using System;
 using System.IO;
 using System.Linq;
+using BotSharp.Core.Engines;
+using DotNetToolkit;
 using EntityFrameworkCore.BootKit;
 using Microsoft.AspNetCore.Builder;
 using Microsoft.AspNetCore.Hosting;
 using Microsoft.AspNetCore.Http;
+using Microsoft.AspNetCore.Mvc;
 using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.PlatformAbstractions;
@@ -43,6 +46,17 @@ namespace BotSharp.WebHost
                 var filePath = Path.Combine(PlatformServices.Default.Application.ApplicationBasePath, "BotSharp.RestApi.xml");
                 c.IncludeXmlComments(filePath);
             });
+
+            // register platform dependency
+            services.AddTransient<IBotPlatform>((provider) =>
+            {
+                var implements = TypeHelper.GetClassesWithInterface<IBotPlatform>(Database.Assemblies);
+                string platform = Database.Configuration.GetValue<String>("BotPlatform");
+                var implement = implements.FirstOrDefault(x => x.Name.Split('.').Last() == platform);
+                var instance = (IBotPlatform)Activator.CreateInstance(implement);
+
+                return instance;
+            });
         }
 
         public void Configure(IApplicationBuilder app, IHostingEnvironment env)
@@ -73,6 +87,17 @@ namespace BotSharp.WebHost
 
             app.UseCors(builder => builder.AllowAnyHeader().AllowAnyMethod().AllowAnyOrigin().AllowCredentials());
 
+            app.Use(async (context, next) =>
+            {
+                string token = context.Request.Headers["Authorization"];
+                if (string.IsNullOrWhiteSpace(token))
+                {
+                }
+
+                await next.Invoke();
+            });
+            app.UseAuthentication();
+
             app.UseMvc();
 
             Database.Configuration = Configuration;
diff --git a/BotSharp.WebHost/wwwroot/images/favicon.ico b/BotSharp.WebHost/wwwroot/images/favicon.ico
new file mode 100644
index 00000000..b150f5f4
Binary files /dev/null and b/BotSharp.WebHost/wwwroot/images/favicon.ico differ