You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you today?

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

ASSISTANT: Sure, may I know your good name to check the reservation list?

USER: My name is Nicholas Young.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: Sorry, there is no reservation on your name.

USER: Thank you.

ASSISTANT: Thank you so much for choosing us.