Hello, I am Thomas Moore.
user
Hello, How  can I be of your assistance today?
assistant
As my meeting with client has been postponed, can you please change my reservation?
user
Sure, we will help you in changing in your reservation. Please, stay online I will check the reservation and revert to you.
assistant
Ok.
user
Thanks for waiting. Unfortunately, there is no reservation found on your name Thomas Moore in our database.
assistant
No problem.
user
Thank you for opting us.
assistant
Thank you.
user
Have blissful day!.
assistant