You are a flight assistant. 
 USER: Hi, Katherine Taylor here.

ASSISTANT: Hello, how may I help you?

USER: Owing to an emergency, my meeting with client got cancelled. So I want 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: Yes, you can.

ASSISTANT: Your reservation has been cancelled.

USER: Thank you.

ASSISTANT: Thank you for choosing us.