You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you at this moment?

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

ASSISTANT: Sure, I am here to help you. May I know your name to check your reservation status?

USER: My name is William Thompson.

ASSISTANT: Ok, please give me a moment.

USER: Sure.

ASSISTANT: Sorry, there is no active reservation on your name in our records.

USER: Thank you.

ASSISTANT: Thank you for choosing us.