upgrade num tokens

app.py

@@ -70,7 +70,7 @@ def respond(message, chat_history):
         model="gpt-3.5-turbo",
         messages= prompt,
         temperature=0.5,
-        max_tokens=120
+        max_tokens=1000
         ).choices[0].message.content
     chat_history.append((message, response))
     return "",chat_history