no appending message

app.py

@@ -14,16 +14,16 @@ client = OpenAI(
 )
 
 # set the context
-messages = [{"role": "system", "content": "Translate the patent text from Chinese to English."}]
+messages = [{"role": "system", "content": "Translate the patent text from Chinese to English."}, {"role": "user", "content": None}]
 
 # set model
 model = "gpt-3.5-turbo-16k"
 
 # Define the reset function
-def reset_context():
-    global messages
-    messages = [{"role": "system", "content": "Translate the patent text from Chinese to English."}, {"role": "user", "content": None}]
-    return "Context reset!"
+# def reset_context():
+#     global messages
+#     messages = [{"role": "system", "content": "Translate the patent text from Chinese to English."}, {"role": "user", "content": None}]
+#     return "Context reset!"
 
 # get the user inputs
 def translate(text_cn):