You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

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

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: May I know your good name please?

USER: Jessica Harris here.

ASSISTANT: Please wait for a moment.

USER: Ok.

ASSISTANT: Sorry Harris, there is no reservation found as per your name in our database.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us with a query.