Hello, I am Stephen Martin.
user
Hello, how may I help you?
assistant
My plan to meet my family friend on his birthday has been postponed so, I want to change my existing reservation.
user
Sure, please wait a moment I'll check the details of your reservation.
assistant
Sure.
user
Sorry to say, unfortunately there is no reservation regarding your name.
assistant
Thank you for providing information.
user
Thank you for reaching us. Have a nice day!.
assistant