Hi. I am John Phillips.
user
How can I provide assistance to you?
assistant
Please help me with changing my reservation.
user
 Please wait for some time, I will check with your existing reservation status.
assistant
Ok.
user
We hardly tried to find your reservation but, no reservation has been found with your name.
assistant
That's fine, thanks for the information.
user
Thank you for reaching us with a query.
assistant