We have a placebo button on the last page of our online school interview booking system. The last page clearly states that their bookings are confirmed and hav

We have a placebo button on the last page of our online school interview booking system. The last page clearly states that their bookings are confirmed and have been emailed to them, but during usability trials we found many people wanted another button to confirm completion. So now we have a "Finished" button that simply takes them back to our home page.