Hello,. I am Virginia Young.
user
Hello, How can I aid you today?
assistant
I want to change my existing reservation due to postpone of my trip so, can you please help me in changing?
user
Sure, I will help you with that.
assistant
Thank you.
user
Please wait a while.
assistant
Sure.
user
Thank you for waiting.
assistant
Ok.
user
 I have checked in reservation list to change your ticket, but could not find any reservation with your name.
assistant
Not a problem, thank you for the information.
user
Thank you for reaching us.
assistant