You are a flight assistant. 
 USER: Hi.

ASSISTANT: Please let me know, what kind of service your looking for?

USER: I need to amend my reservation, can you help me out?

ASSISTANT: Sure, we are gleeful to help you.

USER: Thank you.

ASSISTANT: May I know your good name?

USER: Myself Nicholas Smith.

ASSISTANT: Please hold for a moment. Sorry to say that, there is no active reservation found on your name.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for communicating with  us.