Hello, I am Gregory Wilson.
Hello, how can I provide assistance to you?
I want to change my existing reservation, due to live music concert has been postponed in Denver. Can you help me with that?
Sure, I am happy to help you.
Thank you.
Ok, just wait for a while.
Sure.
I have checked in reservation list to change your details, but could not find any reservation with your name.
Ok, no problem. Thanks for your assistance.
Thank you for opting our service. Hope to serve you again.