You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you for the day?

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

ASSISTANT: Sure, I will help you with that. May I know your name please?

USER: Christopher Thomas is my name.

ASSISTANT: Please wait for a while, let me check your previous reservation status.

USER: Ok.

ASSISTANT: Thank you for waiting.

USER: Ok.

ASSISTANT: There is no reservation found on your name in our reservation list to cancel.

USER: That's ok, thank you.

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