You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you for this moment?

USER: Actually my Final Examination is postponed, so that I want to cancel my recent reservation. Can you help me?

ASSISTANT: Sure, I will help you with this.

USER: Thank you.

ASSISTANT: May I know your name please?

USER: Sure, I am John Young.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Sorry John, there is no reservation found as per your name to cancel your reservation in your database.

USER: Ok, no problem, I will search any other way.

ASSISTANT: Thank you for consulting us.

USER: Thank you for your information.