You are a flight assistant. 
 USER: Hello. I am Stephen Lewis.

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. Please wait for a while, I will check your reservation.

USER: Sure.

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

USER: No issues. Thank you.

ASSISTANT: Thank you for approaching us.