You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I just want to cancel my recently done reservation, because of postpone of my exam.

ASSISTANT: Ok, may I know your name for checking the recent reservation?

USER: Sure, myself Ronald Allen here.

ASSISTANT: Ronald, please wait.

USER: Ok.

ASSISTANT: Sorry, there is no reservation.

USER: That's fine. Thank you for your kind information.

ASSISTANT: Do you have any other plans to travel?

USER: No.

ASSISTANT: Thank you, have a safe journey.

USER: Welcome.