Hello.
Hello, how can I help you today?
I am William Thomas.
Ok.
Due to my health problem I want to change my reservation, can you please help me that?
Sure, I will help you.
Thank you.
Please wait for a while.
Ok.
Thanks for waiting, there is no reservation done in your name to change.
Ok, no problem. Thanks for your kind help.
Thank you for availing us.