Hello.
user
Hello, how can I assist you for the day?
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
Sure, may I know your good name?
assistant
I am William Harris.
user
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 checking.
user
Thank you for choosing us.
assistant