You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you out?

USER: Please cancel my recent reservation owing to an emergency.

ASSISTANT: Sure, I will help you in cancelling the ticket. May I know your name please?

USER: My name is Joseph Campbell.

ASSISTANT: I have found your reservation, can I cancel on your request?

USER: Cancel reservation.

ASSISTANT: I have cancelled the reservation as per your request.

USER: Thanks.