Update app.py

app.py

@@ -1,5 +1,6 @@
 # Q&A Chatbot
 from langchain.llms import OpenAI
+from constants import openai_key
 
 #from dotenv import load_dotenv
 
@@ -11,7 +12,7 @@ import os
 ## Function to load OpenAI model and get respones
 
 def get_openai_response(question):
-    llm=OpenAI(model_name="text-davinci-003",temperature=0.5)
+    llm=OpenAI(model_name="gpt-3.5-turbo-instruct",temperature=0.5)
     response=llm(question)
     return response