Hello,. I am Dorothy Garcia.
user
Hello, how can I assist you?
assistant
I want to change my existing reservation as my exam got postponed. Please help me out.
user
Sure, I am happy to help you. Please wait for a while.
assistant
Ok.
user
Thank you for waiting, There is no reservation found on your specified name.
assistant
Ok, no problem. Thank you for your service.
user
Thank you for approaching us.
assistant