diff --git a/BotSharp.Core/Adapters/Dialogflow/DialogflowIntentResponseMessage.cs b/BotSharp.Core/Adapters/Dialogflow/DialogflowIntentResponseMessage.cs
index c5439b65..f5188398 100644
--- a/BotSharp.Core/Adapters/Dialogflow/DialogflowIntentResponseMessage.cs
+++ b/BotSharp.Core/Adapters/Dialogflow/DialogflowIntentResponseMessage.cs
@@ -7,7 +7,6 @@ namespace BotSharp.Core.Adapters.Dialogflow
 {
     public class DialogflowIntentResponseMessage : AIResponseMessageBase
     {
-        public string Lang { get; set; }
         public Object Speech { get; set; }
         public Object Payload { get; set; }
     }
diff --git a/BotSharp.Core/BotSharp.Core.csproj b/BotSharp.Core/BotSharp.Core.csproj
index ab625d88..32d3e63f 100644
--- a/BotSharp.Core/BotSharp.Core.csproj
+++ b/BotSharp.Core/BotSharp.Core.csproj
@@ -12,13 +12,14 @@
     <GeneratePackageOnBuild>true</GeneratePackageOnBuild>
     <Authors>Haiping Chen</Authors>
     <Company />
-    <Product>BotSharp</Product>
+    <Product>BotSharp.Core</Product>
     <Description>.Net implementation of open chatbot platform like google Dialogflow. Modulized design supports different NLU engine as backend.</Description>
     <RepositoryType>MIT</RepositoryType>
     <RepositoryUrl>https://github.com/Oceania2018/BotSharp</RepositoryUrl>
     <PackageTags>NLU, Chatbot, Bot, AI Bot</PackageTags>
     <Version>1.1.0</Version>
     <PackageReleaseNotes>Support Rasa NLU 0.12.x</PackageReleaseNotes>
+    <Copyright>Since 2018 Haiping Chen</Copyright>
   </PropertyGroup>
 
   <ItemGroup>
diff --git a/BotSharp.Core/Engines/AgentImporterInDialogflow.cs b/BotSharp.Core/Engines/AgentImporterInDialogflow.cs
index 7ae1ed16..447abf81 100644
--- a/BotSharp.Core/Engines/AgentImporterInDialogflow.cs
+++ b/BotSharp.Core/Engines/AgentImporterInDialogflow.cs
@@ -107,7 +107,6 @@ namespace BotSharp.Core.Engines
                                     {
                                         return new IntentResponseMessage
                                         {
-                                            Lang = x.Lang,
                                             Payload = JObject.FromObject(x.Payload),
                                             Type = x.Type
                                         };
@@ -119,7 +118,6 @@ namespace BotSharp.Core.Engines
 
                                         return new IntentResponseMessage
                                         {
-                                            Lang = x.Lang,
                                             Speech = speech,
                                             Type = x.Type
                                         };
diff --git a/BotSharp.Core/Intents/IntentDriver.cs b/BotSharp.Core/Intents/IntentDriver.cs
index 1191e292..68e3c12b 100644
--- a/BotSharp.Core/Intents/IntentDriver.cs
+++ b/BotSharp.Core/Intents/IntentDriver.cs
@@ -1,5 +1,7 @@
 using BotSharp.Core.Agents;
+using BotSharp.Core.Engines;
 using EntityFrameworkCore.BootKit;
+using Microsoft.EntityFrameworkCore;
 using System;
 using System.Collections.Generic;
 using System.Linq;
@@ -9,6 +11,17 @@ namespace BotSharp.Core.Intents
 {
     public static class IntentDriver
     {
+        public static Intent GetIntent(this IBotEngine bot, Database dc, string intentId)
+        {
+            return dc.Table<Intent>()
+                .Include(x => x.Contexts)
+                .Include(x => x.Responses).ThenInclude(x => x.Contexts)
+                .Include(x => x.Responses).ThenInclude(x => x.Parameters)
+                .Include(x => x.Responses).ThenInclude(x => x.Messages)
+                .Include(x => x.UserSays).ThenInclude(x => x.Data)
+                .FirstOrDefault(x => x.Id == intentId);
+        }
+
         public static String CreateIntent(this Agent agent, Database dc, Intent intent)
         {
             if (dc.Table<Intent>().Any(x => x.Id == intent.Id)) return intent.Id;
diff --git a/BotSharp.Core/Intents/IntentResponseMessage.cs b/BotSharp.Core/Intents/IntentResponseMessage.cs
index 6cbaee78..e0d3799d 100644
--- a/BotSharp.Core/Intents/IntentResponseMessage.cs
+++ b/BotSharp.Core/Intents/IntentResponseMessage.cs
@@ -19,10 +19,6 @@ namespace BotSharp.Core.Intents
 
         public AIResponseMessageType Type { get; set; }
 
-        [Required]
-        [MaxLength(5)]
-        public String Lang { get; set; }
-
         /// <summary>
         /// json list data
         /// </summary>