Hello, I am Michael Baker.
user
Hello, May I know what kind of service you are expecting from us.
assistant
As my live concert was postponed, I want to change my existing reservation.
user
Ok, please wait for a minute, I will revert to you.
assistant
Ok.
user
Sorry, there is no reservation found with your name. Thank you for availing us.
assistant
No problem, Thank you for the information.
user