Hello. Michael Miller here.
user
Hello, how can I assist you?
assistant
My scheduled examination dates has been postponed, so I would like to change my reservation.
user
Yes, I can help you. Please wait for a while.
assistant
Sure.
user
There is no ticket booked previously on your name, so, we could not found any reservation.
assistant
That's fine, thanks for your help.
user
Thank you for your time in reaching us.
assistant