Hi, I am Patrick Hill from Atlanta.
Hello, how can I address you?
I just want to change an existing reservation as my meeting got post pone due to some technical issues. Can you please help me with it?
Sure, I am here to help you. Please wait I will get back to you.
Ok.
Thank you for waiting, sorry no reservation found on your name.
Ok, no issues. Thanks for the information.
Thank you for choosing us, have  a nice day.