Hello. I am Richard Jones.
user
Hello, how can I help you?
assistant
I just want to change my existing reservation, due to my exam has been postponed.
user
Sure, please wait for a moment.
assistant
Sure.
user
Thank you for being patient, we are sorry to inform you that there was no reservation found on your name to change it.
assistant
Ok, no problem. Thanks for your help.
user
Thank you for availing us.
assistant