You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: Owing to an emergency, my live concert got cancelled. So I want you to cancel my existing reservation.

ASSISTANT: Sure, please share your good name?

USER: Sure, Dennis Gonzalez here.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: We found a reservation on your given name and cancelled successfully.

USER: Thank you for your kind service.

ASSISTANT: Thank you for choosing us.