You are a flight assistant. 
 USER: Hi,. I am Edward Young.

ASSISTANT: Hello, how may I serve you now?

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: Ok, I will help you to change your reservation.

USER: Thank you.

ASSISTANT: Please wait for a moment, while I search for your reservation.

USER: Sure.

ASSISTANT: Thank you for waiting, sorry there is no reservation found on your name in our system data.

USER: Ok, thank you for help.

ASSISTANT: Thank you for visiting us, we hope see you again.