You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you at this moment?

USER: I want to cancel my recent reservation due to sudden postpone of my exams. Can you help me with that?

ASSISTANT: Sure, please provide your name for checking the current status of your reservation.

USER: I am Andrew Wilson.

ASSISTANT: Please wait for a couple of minutes.

USER: Sure.

ASSISTANT: Sorry, no reservation found on name of Andrew Wilson.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for approaching us, have a nice day.