Hello,.
user
Hello. How may I serve you today?
assistant
I am Katherine Rodriguez. I want to change my existing reservation due to postpone of my exams, so can you help me in changing my reservation?
user
Sure, I'll try to help you in change an existing reservation.
assistant
Thank you.
user
Please wait a moment I will check the reservation list.
assistant
Sure.
user
Thank you for waiting, I have checked in reservation list to change your ticket, but could not find any reservation with your name.
assistant
No problem, thank you for the information.
user
Thank you for availing us.
assistant