Update app.py

app.py

@@ -191,7 +191,7 @@ For contact information:
 #if __name__ == '__main__':
 #    main()   
 def generate_response(user_input):
-    response = openai.ChatCompletion.create(
+    response = client.chat.completions.create(
         model="gpt-3.5-turbo",
         messages=[
             {"role": "system", "content": "You are a highly skilled AI assistant that can understand and answer questions in a natural and intelligent manner."},