Hello.
user
Hello, how may I aid you?
assistant
I am Sandra Taylor. I want to change an existing reservation, can you please help me in that?
user
Sure, please wait. I will check the reservation on your name and revert to you.
assistant
Thank you for considering my request. Sure, I will wait for your response.
user
Sorry, we couldn't find a reservation on your name to change.
assistant
That's ok, not a problem. Thanks for your information.
user
Thank you for reaching us.
assistant