You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I provide assistance to you?

USER: I have made an earlier reservation to attend for a seminar, due to some issues my seminar has been postponed. Could you please aid me to change it?

ASSISTANT: Sure, I will help you with that. Can I have your name please to check the status of your reservation?

USER: Sure, my name is Kenneth Garcia.

ASSISTANT: Please wait for a minute.

USER: Sure.

ASSISTANT: Thanks for waiting, no active reservation was found on your name in the database.

USER: That's Ok, thanks for your assistance.

ASSISTANT: Thank you for availing us.