Update app.py

app.py

@@ -6,7 +6,7 @@ import openai
 import pinecone
 from llama_index import VectorStoreIndex, StorageContext
 from llama_index.chat_engine.types import ChatMode
-from llama_index.llms import ChatMessage, MessageRole
+from llama_index.llms import ChatMessage, MessageRole, OpenAI
 from llama_index.vector_stores import PineconeVectorStore
 
 from environments import OPENAI_API_KEY, PINECONE_API_KEY, PINECONE_INDEX, PASSWORD
@@ -20,9 +20,12 @@ pinecone.init(
 )
 pinecone_index = pinecone.Index(PINECONE_INDEX)
 
+llm = OpenAI(temperature=0.1, model="gpt-3.5-turbo-1106")
+service_context = ServiceContext.from_defaults(llm=llm)
+
 vector_store = PineconeVectorStore(pinecone_index=pinecone_index)
 storage_context = StorageContext.from_defaults(vector_store=vector_store)
-index = VectorStoreIndex.from_documents([], storage_context=storage_context)
+index = VectorStoreIndex.from_documents([], storage_context=storage_context, service_context=service_context)
 chat_engine = index.as_chat_engine(chat_mode=ChatMode.CONTEXT)
 DENIED_ANSWER_PROMPT = '對不起，我是設計用於回答關於屯門地區康健中心的服務內容'