You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I was about to hold a press conference in New York on security issues. But it got cancelled. Do you deal in change of flight reservations?

ASSISTANT: Sure, I will deal with that. May I know your name please?

USER: Cancel my flight ticket and my name is Benjamin Robinson.

ASSISTANT: Ok, please wait for a moment, I will check the details and get back to you.

USER: Sure.

ASSISTANT: Sorry Benjamin, there is no reservation found on your name.

USER: It is ok not a problem. Thanks for your information.

ASSISTANT: Thank you for approaching us, have a nice day. You are welcome.