GenerateEndingAudio

src/Plugins/BotSharp.Plugin.Twilio/OutboundPhoneCallHandler/Functions/HangupPhoneCallFn.cs

@@ -44,8 +44,8 @@ public class HangupPhoneCallFn : IFunctionCallback
         var processUrl = $"{_twilioSetting.CallbackHost}/twilio/voice/hang-up?agent-id={message.CurrentAgentId}&conversation-id={conversationId}";
 
         // Generate initial assistant audio
-        /*string initAudioFile = null;
-        if (!string.IsNullOrEmpty(args.ResponseContent))
+        string initAudioFile = null;
+        if (!string.IsNullOrEmpty(args.ResponseContent) && _twilioSetting.GenerateEndingAudio)
         {
             var completion = CompletionProvider.GetAudioSynthesizer(_services);
             var data = await completion.GenerateAudioAsync(args.ResponseContent);
@@ -53,7 +53,7 @@ public class HangupPhoneCallFn : IFunctionCallback
             fileStorage.SaveSpeechFile(conversationId, initAudioFile, data);
 
             processUrl += $"&init-audio-file={initAudioFile}";
-        }*/
+        }
 
         var call = CallResource.Update(
             url: new Uri(processUrl),

src/Plugins/BotSharp.Plugin.Twilio/Services/TwilioService.cs

@@ -145,10 +145,6 @@ public class TwilioService
                 response.Play(new Uri(uri));
             }
         }
-        else
-        {
-            response.Say("Goodbye.");
-        }
 
         response.Hangup();
         return response;

src/Plugins/BotSharp.Plugin.Twilio/Settings/TwilioSetting.cs

@@ -32,4 +32,5 @@ public class TwilioSetting
     public bool TranscribeEnabled { get; set; } = false;
 
     public bool GenerateReplyAudio { get; set; } = true;
+    public bool GenerateEndingAudio { get; set; } = true;
 }

src/Plugins/BotSharp.Plugin.Twilio/data/agents/6745151e-6d46-4a02-8de4-1c4f21c7da95/functions/util-twilio-hangup_phone_call.json

@@ -8,8 +8,12 @@
       "reason": {
         "type": "string",
         "description": "The reason why user wants to end the phone call."
+      },
+      "response_content": {
+        "type": "string",
+        "description": "A response statement said to the user to politely and gratefully ending a conversation before hanging up."
       }
     },
-    "required": [ "reason" ]
+    "required": [ "reason", "response_content" ]
   }
 }