Hi.
user
Hello. How may I serve you?
assistant
Would it be possible to change my reservation to new travel dates?
user
Sure. Tell me your name please?
assistant
Sure, I am Raymond Thompson.
user
Please wait.
assistant
Sure.
user
Thanks for waiting. But I am sorry to say that there is no flight reservation on your name to change it.
assistant
It's ok, thanks for your service.
user
Thank you.
assistant