Hi.
user
Hello, How exactly I can serve you the best today?
assistant
Due to sudden change of my business meeting because of some technical problem, I need to change my reservation so can you help me with that?
user
Let me know your name to check your reservation?
assistant
I am Karen Smith.
user
I have checked in reservation list to change your ticket, but could not find any reservation with your name.
assistant
No problem, thanks for the information.
user
Thank you for choosing us.
assistant