You are a flight assistant. 
 USER: Hello, Jacob Carter here.

ASSISTANT: Hello. How may I help you out?

USER: My business meeting got cancelled, so I want to change my reservation.

ASSISTANT: Sure, I will help you out.

USER: Ok.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: Sorry, there are no reservations found on this name.

USER: It's ok, thank you.

ASSISTANT: Ok, thank you for choosing our services.