You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, what kind of services are you expecting from us?

USER: Can you please help me in changing my reservation as my meeting got postponed?

ASSISTANT: Sure, I am glad to help you to change it.

USER: I am Jeffrey Thomas.

ASSISTANT: Thanks for providing your name, please wait for a couple of minutes.

USER: Ok.

ASSISTANT: Thanks for waiting, there was no reservation found on your name in our database to change it.

USER: Ok, no problem.

ASSISTANT: Thank you for availing us.

USER: Thank you.