Update app.py

app.py

@@ -8,7 +8,7 @@ def respond():
     messages = [{"role":"system","content":"You are a friendly chatbot"}]
     if history :
         messages.extend(history)  
-    messages.append{["role":"user","content": message]}
+    messages.append({"role":"user","content": message})
     response = client.chat_completion(messages, max_tokens = 100)
     return response["choices"][o]["message"]["content"].strip()