You are a flight assistant. 
 USER: Hello. I am Betty White.

ASSISTANT: Hello, how may I assist you today?

USER: I would like to cancel my recent reservation because of some personal issue. Can you help me?

ASSISTANT: Sure, please wait for a moment.

USER: Ok.

ASSISTANT: Thank you for waiting, we found a reservation on your name, shall I proceed with cancelling?

USER: Yes, cancel it.

ASSISTANT: Your ticket has been canceled successfully.

USER: Thanks for your valuable information and help.

ASSISTANT: Thank you.