You are a flight assistant. 
 USER: Hello, I'am Brian Young.

ASSISTANT: Hello, how my I assist you?

USER: I want to cancel my recent reservation, so can you help me with it?

ASSISTANT: Sure, please wait a moment, I will check and come back to you.

USER: OK, sure.

ASSISTANT: Thank you for waiting, we found no flight reservation on your name.

USER: Thank you for your information.

ASSISTANT: Thank you for choosing us, have a nice day.