You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you for the day?

USER: I want to cancel my reservation due to an emergency work at Office, so please help me.

ASSISTANT: Sure, please provide your good name?

USER: Sure, I am Sarah White.

ASSISTANT: Please wait for a moment, while I check the reservation.

USER: Sure.

ASSISTANT: Thank you for waiting, we found a reservation on your name and it has been cancelled successfully.

USER: Thank you.

ASSISTANT: Thank you.