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