Update app.py

app.py

@@ -28,7 +28,7 @@ def chatbot(input):
             model="gpt-3.5-turbo", messages=messages
         )
         reply = chat.choices[0].message.content
-        messages.append({"role": "assistant", "content": reply})
+        messages = [{"role": "system", "content": prompt}]
         return reply
 
 inputs = gr.inputs.Textbox(lines=7, label="文字润色机")