update prompt

app.py

@@ -480,9 +480,20 @@ prompt = ZeroShotAgent.create_prompt(
     # input_variables=["input", "chat_history", "agent_scratchpad"]
 )
 
+prompthead_openai = \
+"""
+You are a helpful AI assistant. Your mission is to answer the following request as best as you can with detail information and explanation. 
+You must always check vector database first and try 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.
+"""
+prompthead_openai_OR = \
+"""
+You are a helpful AI assistant.
+"""
+
 prompt_openai = OpenAIMultiFunctionsAgent.create_prompt(
     system_message = SystemMessage(
-            content="You are a helpful AI assistant."),
+            content = prompthead_openai),
     # extra_prompt_messages = [MessagesPlaceholder(variable_name="memory")],
 )