You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Christopher Martin. Owing an emergency, I want to cancel my recent reservation. Can you please help me?

ASSISTANT: Sure, I will help you to cancel your reservation.

USER: Thank you.

ASSISTANT: Please hold on for a moment.

USER: Ok, take your time.

ASSISTANT: Sorry, no reservation found on your name to cancel your reservation.

USER: That's ok, thank you for checking.

ASSISTANT: Welcome, have a nice day.