You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you today?

USER: Janet Phillips here. I need to cancel my recent reservation due to my scheduled examination dates has been postponed.

ASSISTANT: Sure, I am mirthful to help you to cancel your reservation. Please wait a moment.

USER: Ok.

ASSISTANT: Sorry, no reservation found on your name to cancel your reservation.

USER: That's ok, no problem.

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

USER: Thank you.