Hello. I am Stephanie Smith.
user
Hello, How can I assist you today?
assistant
I would like to change my existing reservation due to postpone of my exams. Could you please help me?
user
Sure, I will help you with that. Please wait a while.
assistant
Sure, I will wait for your response.
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 worries, thank you for the information.
user
Thank you for opting us.
assistant