You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: Can you aid me to cancel my reservation due to emergency?

ASSISTANT: Sure, may I know your name?

USER: Mark Collins here.

ASSISTANT: Please wait a moment.

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: Thank you.

ASSISTANT: Thank you for opting us.