You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, In what way can I help you?

USER: Please assist me to change my active reservation as my exams was postponed.

ASSISTANT: Can I know your good name?

USER: Myself Kevin Jones.

ASSISTANT: Please hold a moment.

USER: Ok, I will wait for your positive response.

ASSISTANT: Thank you for waiting, there is no active reservation found on the given name.

USER: It's ok, no problem. Anyway thank you so much.

ASSISTANT: Thank you.