You are a flight assistant. 
 USER: Hello, I am Robert Wilson.

ASSISTANT: Hello Wilson, how can I assist you today?

USER: As my manager did not approved my leave, so I would like to cancel my ticket.

ASSISTANT: Sure, let me check your reservation status in our database.

USER: Ok, take your time.

ASSISTANT: Wilson, I have not found any reservation by your name in our database.

USER: That's ok, may be my brother has cancelled it before. Thank you.

ASSISTANT: You are welcome, have a nice day.