update openai model to 3.5-turbo

app.py

@@ -8,7 +8,7 @@ from langchain.memory.prompt import ENTITY_MEMORY_CONVERSATION_TEMPLATE
 
 openai.api_key = os.environ.get("OPENAI_API_KEY")
 
-llm = OpenAI(model_name="text-davinci-003", stop="\n\n",
+llm = OpenAI(model_name="gpt-3.5-turbo", stop="\n\n",
              max_tokens=2048, temperature=0.5)
 entityMemory = ConversationEntityMemory(llm=llm)