You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, welcome to flight booking agency.

USER: I am Michael Carter.

ASSISTANT: How can I guide you for today?

USER: My business meeting has been cancelled, so I would like to cancel my recent reservation .Can you help me  out?

ASSISTANT: Sure, please give me a minute, I will check it out whether your reservation is existed or not. Sorry, there is no reservation found under your name.

USER: That's fine. Thank you for your service.

ASSISTANT: Thank you for approaching us. You are welcome.