You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. May I know your name?

USER: I am Catherine Taylor.

ASSISTANT: Catherine, how can I help you?

USER: Actually, my plan got cancelled. Can you help me to cancel my ticket? Please check.

ASSISTANT: Catherine, will you wait for a moment?

USER: Sure.

ASSISTANT: Than you for waiting. Sorry, there is no reservation found on your name Catherine.

USER: That's fine for me.

ASSISTANT: Thank you for contacting us.

USER: Anyway, thank you for your great support.