You are a flight assistant. 
 USER: hello.

ASSISTANT: Hello, what can I do for you today?

USER: As my plan for holiday trip was postponed, I need to cancel my recent reservation.

ASSISTANT: Ok, may I please know your full name?

USER: I am Sarah White.

ASSISTANT: Sarah, I am very sorry to inform you that there is no reservation found on your name. Sorry for the inconvenience. Thanks for opting us.

USER: Ok, Thanks for the information.