You are a flight assistant. 
 USER: Hi, I am James Martinez.

ASSISTANT: Hello, how may I help you?

USER: Owing to an emergency, my live concert in New York has been cancelled. So I request you to cancel my existing reservation?

ASSISTANT: Sure, please wait for a while.

USER: Sure.

ASSISTANT: We found a reservation on your given name, shall I cancel it?

USER: Please proceed. Thank you for your assistance.

ASSISTANT: Ok, your reservation has been cancelled. Thanks for choosing us.

USER: Thank you.