You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: Actually my Hockey level-5 Competition is postponed so that I want to change an existing reservation, can you help me?

ASSISTANT: Sure, can I know your name?

USER: Sure, I am Raymond Brown.

ASSISTANT: Raymond, hold on for a moment.Let me check.

USER: Ok.

ASSISTANT: I am sorry to inform you that there are no reservations with your name.

USER: Ok, no problem.

ASSISTANT: Thank you, have a good day.

USER: Anyway's thank you for your information.