You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I would like to spend some days with my family, I want to change my existing reservation. Please help me out.

ASSISTANT: Sure, I will help you with this. Can you please provide your good name to check your reservation status?

USER: My name is James Collins.

ASSISTANT: Give me a moment please.

USER: Sure.

ASSISTANT: James Collins, there is no active reservation found under your name in our database.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you for opting us.