You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. May I know your name please?

USER: My name is Sarah Wright.

ASSISTANT: How can I be a help for you?

USER: Due to an emergency, I would like to cancel my recent reservation.

ASSISTANT: Ok Sarah, is the ticket booked with your name?

USER: Yes.

ASSISTANT: Please hold on for a moment.

USER: Ok.

ASSISTANT: Sorry, there is no ticket booked with your name to cancel.

USER: It's ok, thank you for your response.

ASSISTANT: Thank you, have a nice day.