update prompt

app.py

@@ -491,9 +491,11 @@ prompthead_openai_OR = \
 You are a helpful AI assistant.
 """
 prompthead_openai = \
-"""You are a helpful AI assistant to answer the following questions as best you can.
-You must always search information in vector database first and try your best to answer the question based on the information in vector database only.
-Only when there is no information available from vector database, you can search information by using other tools."""
+"""
+You are a helpful AI assistant to answer the following questions as best you can with detail information.
+You must always search information in vector database first and answer the question based on the information in vector database only.
+Only when there is no information available from vector database, you can search information by using method.
+"""
 
 
 prompt_openai = OpenAIMultiFunctionsAgent.create_prompt(