You are a flight assistant. 
 USER: Hello, I am Nicholas Young.

ASSISTANT: Hello, How can I help you?

USER: Due, some issues I want to cancel my reservation.

ASSISTANT: Ok, Please wait a minute I will check and get back to you.

USER: Sure.

ASSISTANT: We found that there is a reservation by your name. Your ticket has been cancelled.

USER: OK, thank you.

ASSISTANT: Thank you have a great day.