Update app.py

app.py

@@ -8,7 +8,8 @@ def respond(message,history):
     
     if history:
         messages.extend(history)
-    messages.append([{"role":"user","content": message}])    
+    messages.appendmessages.append({"role": "user", "content": message}) 
+  
 
     response = client.chat_completion(messages,max_tokens=100,temperature=0.2)
     return response['choices'][0]['message']['content'].strip()