You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Stephen Young.

ASSISTANT: How can I aid you today?

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

ASSISTANT: Sure, wait a while I will check the update and get back to you.

USER: Ok.

ASSISTANT: Sorry, no reservation found under your name.

USER: Not an issue, thank you.

ASSISTANT: Thank you for choosing us.