You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how shall I serve you today?

USER: I am Mathew Johnson. Change in my business trip plan, I cancel my plan. Can you confirm whether my secretary has cancel my ticket. Please help me out.

ASSISTANT: Ok, please wait I will check and let you know.

USER: Sure.

ASSISTANT: Sorry, there is no recent reservation on your name to cancel.

USER: Ok, thanks for the information. I think my secretary cancelled it already.

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