Hello. I am Brian Hall.
user
Hello, how can I oblige you today?
assistant
I want to change my existing reservation as my exam got postponed. Please help me by changing my reservation.
user
Sure, we can help with that.
assistant
Thank you.
user
Please wait for a moment.
assistant
Ok.
user
Thank you for waiting, there is no reservation found on your name.
assistant
That's fine, thanks for the response.
user
Thank you.
assistant