update prompt

app.py

@@ -376,9 +376,10 @@ Calculator: Useful for when you need to answer questions about math.
 Text To Sound: Useful when you need to convert text into sound file."""
 
 
-PREFIX = """Answer the following questions as best you can with details. 
+PREFIX = """You are virtual assistant and you should try your best to answer the following Request.
+Your response should have detail information and explanation like a teacher.
 You can always use tools to convert text to sound.
-You must always check internal vector database first and try to answer the question based on the information in internal vector database only.
+You must always check internal vector database first and try to answer 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 other tools.
 You have access to the following tools:"""
 
@@ -395,7 +396,7 @@ Final Answer: the final answer to the original input question"""
 
 SUFFIX = """Begin!
 
-Question: {input}
+Request: {input}
 Thought:{agent_scratchpad}"""
 
 SUFFIX2 = """Begin!