You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, How can I aid you today?

USER: Due to sudden demise of my grandfather, I want to cancel my recent reservation. Can you help me out in cancellation?

ASSISTANT: Ok. Sure, I can help you in cancellation.

USER: I am Betty Gonzalez.

ASSISTANT: Ok. Please wait a while.

USER: Sure.

ASSISTANT: Your ticket is not reserved with any of the flights. Thanks for choosing us.

USER: Ok, not a problem. Thank you for assisting me,.

ASSISTANT: Have a nice day.