update interface beta test2

app.py

@@ -1,5 +1,4 @@
 import os
-import time
 import gradio as gr
 import cohere
 
@@ -38,8 +37,7 @@ def respond(message, chat_history):
 
         # Update chat history
         chat_history.append((message, response))
-        return "", chat_history
-
+        return chat_history
     except Exception as e:
         return str(e), chat_history