Hi.
Hello.
I am Carolyn Martinez.
How may I assist you?
I want to alter my reservation, due to postponement of concert to be held at the place where I wanted to visit, can you please take your some time for helping me?
Sure, I will help you with that.
Ok.
Martinez, there is no reservation found for you to change.
No problem, thank you for checking.
You are welcome. Thank you for choosing us.