Update app.py

app.py

@@ -3,9 +3,12 @@ import gradio as gr
 
 openai.api_key = "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"
 
+messages.append({"role": "user", "content": user_input})
+
 def openai_chat(prompt):
+    messages.append({"role": "user", "content": user_input})
     completions = openai.Completion.create(
-        engine="gpt-3.5-turbo",
+        engine="text-davinci-003",
         prompt=prompt,
         max_tokens=1024,
         n=1,