You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: Please cancel my recent reservation.

ASSISTANT: Sure, we are here to help you. May I know your name please?

USER: Margaret Taylor is my name.

ASSISTANT: Ok, please be on hold. Sorry, we could not find any reservation on your name.

USER: That's ok, thank you.

ASSISTANT: Thank you for choosing us.