You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you?

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

ASSISTANT: Can I know on which name ticket has been booked?

USER: My name is Shirley Walker.

ASSISTANT: Sure, I will help you. Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry, there is no reservation existing on your name.

USER: Thank you.

ASSISTANT: You are welcome, have a nice day.