Hello. I'm Mark Jones.
user
Hello Jones, how can I help you today?
assistant
My business meeting has been postponed. So, I would like to change my existing reservation which is under my name. Can you please help me with that?
user
Sure, I can help you with that.
assistant
Thank you.
user
Sorry to inform you, there is no reservation found with your name to change.
assistant
Ok, no problem. Thank you for checking. Have a great day.
user
Thank you.
assistant