You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today from my end?

USER: I am Mary Campbell, Could you please help me to cancel my reservation?

ASSISTANT: Sure, I am here to help you out. Please allow me a moment.

USER: Sure.

ASSISTANT: Sorry Mary Campbell, there is no flight reservation on your name.

USER: Ok, not a problem. Thank you for notifying me.

ASSISTANT: Thank you for reaching us.