diff --git a/src/Infrastructure/BotSharp.Abstraction/Agents/Enums/AgentRole.cs b/src/Infrastructure/BotSharp.Abstraction/Agents/Enums/AgentRole.cs
index f9547d5a..4cab43d6 100644
--- a/src/Infrastructure/BotSharp.Abstraction/Agents/Enums/AgentRole.cs
+++ b/src/Infrastructure/BotSharp.Abstraction/Agents/Enums/AgentRole.cs
@@ -3,7 +3,21 @@ namespace BotSharp.Abstraction.Agents.Enums;
 public class AgentRole
 {
     public const string System = "system";
+
+    /// <summary>
+    /// AI Assistant
+    /// </summary>
     public const string Assistant = "assistant";
+
+    /// <summary>
+    /// Client
+    /// </summary>
     public const string User = "user";
+
     public const string Function = "function";
+
+    /// <summary>
+    /// Customer service representative (CSR)
+    /// </summary>
+    public const string CSR = "csr";
 }
diff --git a/src/Infrastructure/BotSharp.Abstraction/Planning/IPlaner.cs b/src/Infrastructure/BotSharp.Abstraction/Planning/IPlaner.cs
index c1f3a9d7..3d7996a1 100644
--- a/src/Infrastructure/BotSharp.Abstraction/Planning/IPlaner.cs
+++ b/src/Infrastructure/BotSharp.Abstraction/Planning/IPlaner.cs
@@ -4,6 +4,7 @@ namespace BotSharp.Abstraction.Planning;
 
 /// <summary>
 /// Task breakdown and execution plan 
+/// https://www.promptingguide.ai/techniques/cot
 /// </summary>
 public interface IPlaner
 {
diff --git a/src/Infrastructure/BotSharp.OpenAPI/BotSharp.OpenAPI.csproj b/src/Infrastructure/BotSharp.OpenAPI/BotSharp.OpenAPI.csproj
index cef8a0e6..f0de437a 100644
--- a/src/Infrastructure/BotSharp.OpenAPI/BotSharp.OpenAPI.csproj
+++ b/src/Infrastructure/BotSharp.OpenAPI/BotSharp.OpenAPI.csproj
@@ -11,6 +11,7 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.AspNetCore.Mvc.Core" Version="2.2.5" />
+    <PackageReference Include="Microsoft.AspNetCore.SignalR" Version="1.1.0" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/src/Infrastructure/BotSharp.OpenAPI/ChatHub.cs b/src/Infrastructure/BotSharp.OpenAPI/ChatHub.cs
new file mode 100644
index 00000000..2131a412
--- /dev/null
+++ b/src/Infrastructure/BotSharp.OpenAPI/ChatHub.cs
@@ -0,0 +1,47 @@
+using Microsoft.AspNetCore.SignalR;
+
+namespace BotSharp.OpenAPI;
+
+public class ChatHub : Hub
+{
+    private readonly IServiceProvider _services;
+    private readonly ILogger _logger;
+    private readonly IUserIdentity _user;
+
+    public ChatHub(IServiceProvider services, 
+        ILogger<ChatHub> logger,
+        IUserIdentity user)
+    {
+        _services = services;
+        _logger = logger;
+        _user = user;
+    }
+
+    public async Task OnMessageReceivedFromClient(string message)
+    {
+        // await Clients.User(_user.Id).SendAsync("ReceiveMessage", message);
+    }
+
+    /// <summary>
+    /// Received message from client
+    /// </summary>
+    /// <param name="user"></param>
+    /// <param name="message"></param>
+    /// <returns></returns>
+    public async Task SendMessage(string user, string message)
+    {
+        // await Clients.User(_user.Id).SendAsync("ReceiveMessage", message);
+    }
+
+    public async Task SendMessageToCaller(string user, string message)
+        => await Clients.Caller.SendAsync("ReceiveMessage", user, message);
+
+    public async Task SendMessageToGroup(string user, string message)
+        => await Clients.Group("SignalR Users").SendAsync("ReceiveMessage", user, message);
+
+    public override Task OnConnectedAsync()
+    {
+        Console.WriteLine($"ChatHub: {""} connected in {Context.ConnectionId}");
+        return base.OnConnectedAsync();
+    }
+}
diff --git a/src/Infrastructure/BotSharp.OpenAPI/Controllers/ChatHubController.cs b/src/Infrastructure/BotSharp.OpenAPI/Controllers/ChatHubController.cs
new file mode 100644
index 00000000..20d6e807
--- /dev/null
+++ b/src/Infrastructure/BotSharp.OpenAPI/Controllers/ChatHubController.cs
@@ -0,0 +1,85 @@
+using BotSharp.Abstraction.Agents.Enums;
+using BotSharp.Abstraction.ApiAdapters;
+using BotSharp.Abstraction.Conversations.Models;
+using BotSharp.OpenAPI.ViewModels.Conversations;
+using Microsoft.AspNetCore.SignalR;
+
+namespace BotSharp.OpenAPI.Controllers;
+
+[Authorize]
+[ApiController]
+public class ChatHubController : ControllerBase, IApiAdapter
+{
+    private readonly IServiceProvider _services;
+    private readonly ILogger _logger;
+    private readonly IHubContext<ChatHub> _chatHub;
+    private readonly IUserIdentity _user;
+
+    public ChatHubController(IServiceProvider services,
+        ILogger<ChatHubController> logger,
+        IHubContext<ChatHub> chatHub,
+        IUserIdentity user)
+    {
+        _services = services;
+        _logger = logger;
+        _chatHub = chatHub;
+        _user = user;
+    }
+
+    [HttpPost("/chat-hub/client/{agentId}/{conversationId}")]
+    public async Task OnMessageReceivedFromClient([FromRoute] string agentId, 
+        [FromRoute] string conversationId, 
+        [FromBody] NewMessageModel input)
+    {
+        var conv = _services.GetRequiredService<IConversationService>();
+        conv.SetConversationId(conversationId, input.States);
+        conv.States.SetState("channel", input.Channel);
+
+        var response = new MessageResponseModel();
+        var inputMsg = new RoleDialogModel("user", input.Text);
+        await conv.SendMessage(agentId, inputMsg,
+            async msg =>
+            {
+                response.Text = msg.Content;
+                response.Function = msg.FunctionName;
+                response.RichContent = msg.RichContent;
+                response.Instruction = msg.Instruction;
+                response.Data = msg.Data;
+            },
+            async fnExecuting =>
+            {
+
+            },
+            async fnExecuted =>
+            {
+
+            });
+
+        var state = _services.GetRequiredService<IConversationStateService>();
+        response.States = state.GetStates();
+        response.MessageId = inputMsg.MessageId;
+
+        // Update console conversation UI for CSR
+        await _chatHub.Clients.All.SendAsync("OnMessageReceivedFromClient", new RoleDialogModel(AgentRole.User, input.Text)
+        {
+            
+        });
+
+        await _chatHub.Clients.All.SendAsync("OnMessageReceivedFromAssistant", new RoleDialogModel(AgentRole.Assistant, response.Text)
+        {
+
+        });
+    }
+
+    [HttpPost("/chat-hub/csr/{agentId}/{conversationId}")]
+    public async Task OnMessageReceivedFromCsr([FromRoute] string agentId,
+        [FromRoute] string conversationId, 
+        [FromBody] NewMessageModel input)
+    {
+        // Update console conversation UI for User
+        await _chatHub.Clients.All.SendAsync("OnMessageReceivedFromCsr", new RoleDialogModel(AgentRole.CSR, input.Text)
+        {
+
+        });
+    }
+}