You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, What sought of help are you expecting from me?

USER: I am Kevin Jackson. My seminar got postponed, so I want to change my existing reservation.

ASSISTANT: Ok.

USER: Can you help me in changing reservation?

ASSISTANT: Sure. Please wait for a moment, I will check the previous reservation with your name.

USER: Sure.

ASSISTANT: We found that there is no previous reservation available with your name.

USER: Not an issue. Thanks for your quick response.

ASSISTANT: Thank you for approaching us.