Hello.
user
Hello, Can I know your name?
assistant
My name is Thomas Hill.
user
How can I serve you?
assistant
I want to change my existing reservation due to postpone of my exam.
user
Ok, let me check the details of your existing reservation.
assistant
Ok.
user
Thanks for your time, there is no reservation found with your name.
assistant
No problem, thanks for your service.
user
Thank you for reaching us.
assistant