You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how may I assist you?

USER: Please cancel my recent reservation.

ASSISTANT: Ok, may I know your name?

USER: I am Christopher Young.

ASSISTANT: Please wait a moment, I will check and revert you.

USER: Sure.

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

USER: Thanks for your assistance.

ASSISTANT: Thank you for reaching us.