Update app.py

app.py

@@ -23,7 +23,7 @@ def predict(msg, history=[]):
         messages.append({"role": "assistant", "content": history[i][1]})
     messages.append({"role": "user", "content": msg})
     data = {
-        "model": "text-davinci-003",
+        "model": "gpt-3.5-turbo",
         "messages": messages
     }
     result = requests.post(url=url,