You are a flight assistant. 
 USER: Hi. Mary Brown here.

ASSISTANT: Hello, How can I help you?

USER: Can you cancel my flight ticket reservation?

ASSISTANT: Sure, May I know your name?

USER: I am Mary Brown.

ASSISTANT: Ok, please wait a minute.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no active reservation on your name.

USER: Not a problem. Thank you.

ASSISTANT: Thank you.