You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I would like to cancel my recent reservation as my grandfather is going through a surgery, help me in cancelling my reservation.

ASSISTANT: Sure, please provide me your name.

USER: I am Helen Roberts.

ASSISTANT: There is no reservation found with your name.

USER: Its ok,thank you.

ASSISTANT: Have a good day.