You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: Owing to an emergency I had to request for this cancel reservation.

ASSISTANT: Sure, may I know your name?

USER: My name is Sandra Williams.

ASSISTANT: Please wait a minute.

USER: Ok.

ASSISTANT: Thank you for your valuable time, we found reservation on your name and cancelled successfully, amount will refund to your registered bank account within 3 working days.

USER: Thanks.

ASSISTANT: Thank you for opting us.