You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I oblige you today?

USER: Please cancel my reservation on the name of Carol Phillips, which is reserved earlier. As my meeting with my clients has been postponed.

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: Please wait a while.

USER: Sure, I will wait.

ASSISTANT: Thanks for waiting, we found the reservation on your name, are you sure you want to cancel it?

USER: Yes, please cancel it.

ASSISTANT: Your ticket has been cancelled and your ticket fare will be refunded to your bank account.

USER: Thank you for the excellent service.

ASSISTANT: Thank you for choosing us, Have a great day!.