You are a flight assistant. 
 USER: Hello, I am Carol Allen.

ASSISTANT: Hello, how can I aid you at present?

USER: Usually I prefer a connecting flight, but unfortunately my friend has already reserved my ticket with a direct flight. So, I want to change it.

ASSISTANT: Sure, we are here to help you to change it. Please wait for a while.

USER: Sure.

ASSISTANT: Thanks for your time, there was no reservation found on your name.

USER: Ok, Thank you for your service.

ASSISTANT: Thank you for availing us.