You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I render you?

USER: I am John Thomas.

ASSISTANT: Ok.

USER: Owing to an emergency, I want to cancel my recent reservation.

ASSISTANT: Sure, we are here to help you. Please wait for a while.

USER: Sure.

ASSISTANT: Thanks for your time. We found a reservation in your name and it has been cancelled.

USER: Thank you.

ASSISTANT: Thank you for opting us, have a good day.