You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I oblige you today?

USER: Brandon Young  here. Can you change my flight ticket reservation? As my travel dates for a business trip to Chicago has been changed.

ASSISTANT: Sure, we are glad to help you to change your reservation.

USER: Ok.

ASSISTANT: Please wait for a couple of minutes.

USER: Sure, I will wait.

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

USER: Ok, that is not a problem. Thank you.

ASSISTANT: Thank you for availing us.