Hello, Linda Collins here.
user
Hello Linda, how can I aid you today?
assistant
I planned to meet my friend in Denver, but he will not be available during my visit. So I want to change my existing reservation.
user
Sure, I will help you with that.
assistant
Thanks.
user
Sorry Linda, no reservation found on your name in our database.
assistant
No problem, thank you for the information.
user
It's my pleasure, have a great day.
assistant