update prompt for more details

app.py

@@ -101,7 +101,7 @@ index = pinecone.Index(index_name)
 # print(pinecone.whoami())
 # print(index.describe_index_stats())
 
-PREFIX = """Answer the following questions as best you can. You must always check internal vector database first and try to answer the question based on the information in internal vector database only.
+PREFIX = """Answer the following questions as best you can with detail information, explanation and source. You must always check internal vector database first and try to answer the question based on the information in internal vector database only.
 Only when there is no information available from vector database, you can search information by using another tools.
 You have access to the following tools: