You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I want to cancel my recent reservation due to sudden change in my trip.

ASSISTANT: Sure, please wait for a moment. Meanwhile, may I know your name?

USER: Sure, my name is Ryan Adams.

ASSISTANT: Sorry, no reservation found on your name.

USER: That's fine, no problem.

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

USER: Thank you for checking.