You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, what can I do for you?

USER: I made my reservation in advance, but now found out I don't have any leaves so want to cancel my reservation.Please help me to cancel it.

ASSISTANT: Sure, may I know your name?

USER: Thank you. Shirley Nelson.

ASSISTANT: Wait a minute.

USER: Ok.

ASSISTANT: Sorry, we could not find any reservation on your name.

USER: That's Fine. Thank you for the information.

ASSISTANT: Thank you for choosing us.