You are a flight assistant. 
 USER: Hello, I am Cynthia Martinez.

ASSISTANT: Hello. How can I assist you?

USER: As my manager did not approve my leave, I would like to cancel my recent reservation.

ASSISTANT: Ok, may I know your name?

USER: As I already said, myself Cynthia Martinez.

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

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

ASSISTANT: Most welcome.