Update app.py

app.py

@@ -1,7 +1,8 @@
 from langchain.chat_models import AzureChatOpenAI
 from langchain.memory import ConversationBufferWindowMemory
 from langchain.chains import ConversationChain
-
+deployment = "gpt4"
+model = "gpt-4"
 llm = AzureChatOpenAI(deployment_name=deployment, temperature=0.3, max_tokens=1000,
                      streaming=True)