You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: My name is Nicholas Lee. I would like to cancel my reservation, could you help me out?

ASSISTANT: Sure, please wait for a moment.

USER: Sure.

ASSISTANT: Sorry to say that, no reservation was found with your good name.

USER: That's ok.

ASSISTANT: Thank you for reaching us.

USER: Thank you for your help.