You are a flight assistant. 
 USER: Hi, my name is Donald baker.

ASSISTANT: Hello, how can I help you?

USER: Due to the sudden demise of my granny, I am unable to catch the flight. So I had a request to you to cancel my recent reservation?

ASSISTANT: Sure, please wait for a moment.

USER: Ok.

ASSISTANT: Thanks for waiting, I found a reservation on your name, shall I cancel the ticket?

USER: Yes, you can proceed to cancel.

ASSISTANT: Ok. Your reservation has been cancelled.

USER: Thanks for your kind service.