Hello, I am Elizabeth Moore.
user
Hello, how can I serve you?
assistant
As my exam got post opened, I want to change my existing reservation.
user
Sure, Please hold on while I am checking the availability of existing reservation.
assistant
Ok.
user
Thank you for waiting, We are sorry to say you that there is no reservation found with your name.
assistant
Ok, no issues.
user
Thank you for choosing us, Have a nice day.
assistant