Hi.
user
Hello, how may I help you 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
ure, I am here to help you. Can you please let me know your good name?
assistant
I am Donald Perez.
user
 Sorry, we did not find any active reservation on your name in our records.
assistant
No problem, thanks for the information.
user
Thank you for choosing us.
assistant