Hi. I am Jessica Martinez.
user
Hello, how may I assist you today?
assistant
 I already have an reservation to attend at my meeting, due to some problems meeting place has been changed. So I need a few changes in my reservation.
user
Ok, please wait let me check the reservation.
assistant
Ok.
user
Sorry, we could not found your reservation.
assistant
Thank you for your information.
user
Thank you.
assistant