You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Mary Adams.

ASSISTANT: How can I aid you at this moment?

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

ASSISTANT: Sure, I am glad to help you.

USER: Thank you.

ASSISTANT: Please allow me a moment.

USER: Sure.

ASSISTANT: Thank you for waiting. Sorry Adams, here there is no reservation found under your name in our database to cancel it.

USER: My pleasure. That's ok, no problem. Thank you for your information.

ASSISTANT: Thank you for reaching us, have a great day.