Merge pull request #544 from hchen2020/master

remove function return appended to dialogs.

Author: Oceania2018

src/Infrastructure/BotSharp.Abstraction/Conversations/Models/RoleDialogModel.cs

@@ -110,7 +110,7 @@ public override string ToString()
     {
         if (Role == AgentRole.Function)
         {
-            return $"{Role}: {FunctionName}({FunctionArgs}) => {Content}";
+            return $"{Role}: {Content} <= {FunctionName}({FunctionArgs})";
         }
         else
         {

src/Infrastructure/BotSharp.Core/Routing/Functions/RouteToAgentFn.cs

@@ -89,7 +89,6 @@ public async Task<bool> Execute(RoleDialogModel message)
                 // Stack redirection agent
                 _context.Push(agentId, reason: $"REDIRECTION {reason}");
                 message.Content = reason;
-                message.Role = AgentRole.Function;
             }
         }
 

src/Infrastructure/BotSharp.Core/Routing/Handlers/RouteToAgentRoutingHandler.cs

@@ -59,12 +59,8 @@ await hook.OnNewTaskDetected(message, inst.NextActionReason)
         message.FunctionArgs = JsonSerializer.Serialize(inst);
         if (message.FunctionName != null)
         {
-            var msg = RoleDialogModel.From(message);
+            var msg = RoleDialogModel.From(message, role: AgentRole.Function);
             var ret = await routing.InvokeFunction(message.FunctionName, msg);
-            if (msg.Role == AgentRole.Function)
-            {
-                _dialogs.Add(msg);
-            }
         }
 
         var agentId = routing.Context.GetCurrentAgentId();