Hello.
user
Hello, how may I aid you?
assistant
I am Dennis Mitchell.
user
Hello Dennis.
assistant
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?
user
Sure, wait a moment to check your reservation status.
assistant
Ok.
user
Sorry Dennis, we don't found any reservation under your name.
assistant
Oh, It's ok. Thank you for your information.
user
Thank you for reaching us, have a great day.
assistant