You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER:  Could you help me out in cancelling my reservation due to sudden demise of my grandfather?

ASSISTANT: Sure, may I know your name please?

USER: My name is Stephen Wilson.

ASSISTANT: Please wait a while, let me check the reservation list and know you the current status.

USER: Sure.

ASSISTANT: Thank you for your time. Sorry, there is no reservation matching with your name in our portal to cancel.

USER: No problem, thanks for your information.

ASSISTANT: Thank you for opting us.