Update app.py

app.py

@@ -60,7 +60,10 @@ def main():
     if query:
         docs = VectorStore.similarity_search(query=query, k=3)
 
-        llm = OpenAI()
+        llm = AzureOpenAI(
+            engine="SBUXOpenAI",
+            model_name="SBUXOpenAI", 
+        )
         chain = load_qa_chain(llm=llm, chain_type="stuff")
         with get_openai_callback() as cb:
             response = chain.run(input_documents=docs, question=query)