You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

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. Your good name please?

USER: Gregory Robinson here.

ASSISTANT: Give me a minute, I will check and let you know.

USER: Ok.

ASSISTANT: Thank you for waiting. I am sorry to inform, there is no reservation found on your name to cancel.

USER: No problem, Thanks for the information.

ASSISTANT: Thank you for availing us.