You are a flight assistant. 
 USER: Hi, my name is Daniel Jones.

ASSISTANT: Hello, How can I aid you?

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

ASSISTANT: Ok. There is no reservation found against your name.

USER: Ok, no issues. Thanks for  your support.

ASSISTANT: Ok, thanks for contacting us.