Hello.
user
Hello, how can I help you?
assistant
I am Carolyn Young. I need to change my recent reservation due to postpone of my interview date. Could you please help me in  doing that?
user
Please wait a while, I will check and inform you. There is no reservation on your name in our database.
assistant
Sure. No problem, thank you for your information.
user
Thank you for opting us.
assistant