You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Paul Robinson.

ASSISTANT: How may I assist you?

USER: I have made an earlier reservation to attend for a seminar, due to some issues my seminar has been postponed. Can you please help me in changing my reservation?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Please wait a moment, I will check the status of your reservation.

USER: Sure.

ASSISTANT: Paul Robinson, no reservation has been found on your name in our database.

USER: Not a problem, thank you for the information.

ASSISTANT: Thank you for approaching us.