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