You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How may I aid you today?

USER: I am William Mitchell.

ASSISTANT: Ok.

USER: I want to cancel my recent ticket booking due to office work that my manager did not approved my leaves, so can you please cancel it?

ASSISTANT: Sure, I will help you. Please wait for a minute.

USER: Thank you.

ASSISTANT: I will let you know.

USER: Sure.

ASSISTANT: Thanks for your time. I did not find your name in the reservation list.

USER: No problem. Thank you.

ASSISTANT: Thank you for availing us.