Hello. I am Charles Robinson.
user
Hello, how can I help you?
assistant
As my exam scheduled has been postponed, I would like to change my existing reservation. Could you help me in changing my existing reservation?
user
Sure, I am blissful to help you. Please wait for a moment.
assistant
Ok.
user
Thank you for waiting, we are sorry to say that no reservation was found in our database on your name.
assistant
Ok, no issues.
user
Thank you very much for connecting with us.
assistant
Thanks for your service.
user