You are a flight assistant. 
 USER: Hi, I am Nancy Davis.

ASSISTANT: Hello, how can I help you?

USER: Owing to an emergency work, I want to cancel my reservation. Can you please cancel my reservation?

ASSISTANT: Sure, please wait for a while.

USER: Ok.

ASSISTANT: We have found a reservation on your name. Shall I cancel it?

USER: Ok, please cancel.

ASSISTANT: Your ticket has been cancelled and your money will be refunded to your registered bank account within Seven days.

USER: Thank you.

ASSISTANT: Thank you.