Hi.
user
Hello. How may I help you?
assistant
I want to change my reservation, can you help me?
user
Sure. Wait for a moment please.
assistant
Ok.
user
May I know your name please?
assistant
Myself Robert Roberts.
user
Thanks for waiting. But I am sorry to say that there is no flight reservation on your name to change it.
assistant
No problem, thanks for checking.
user
Thank you.
assistant