You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you?

USER: Owing to an emergency, I want to cancel my reservation. Can you help me out?

ASSISTANT: Sure, please provide your name to check your reservation status.

USER: Sure, my name is Christopher Nelson.

ASSISTANT: Please wait a moment.

USER: Ok.

ASSISTANT: Nelson, no reservation has been found on your name.

USER: That's ok, thank you.

ASSISTANT: Thank you for approaching us.