You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I render you today?

USER: Kindly please assist me to cancel my recent reservation, due to office work that my manager did not approved my leaves.

ASSISTANT: Sure, may I know your good name please?

USER: Sure, you can check my reservation on the name of Anthony Lopez.

ASSISTANT: OK, please wait for some time.

USER: Sure.

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

USER: Ok, thanks for your information.

ASSISTANT: Thank you for reaching us, have a good day.