It's a non-issue. If you feel that it is, just play with his noodle for an extra 15 minutes.
This is why I thought it would be an interesting discussion.
If I have to cancel and I was given a deposit, the expectation is that I have to return it. Obviously
If I canceled 5 mins before he showed up after already having confirmed, the expectation would be to offer a discount on the next visit.
If I canceled 24 hrs before hand (say he was text friendly or booked by email) there would be no expectation of a discount on the next visit as it was canceled well in advance.
We have set confirmation times for a reason, so is there an expectation of discount if you cancel at the time of mutually agreed upon confirmation time? Is the appointment not tentative until it is confirmed? And if tentative, then is an expectation of discount?
Personally I would say no there is not. If I have a confirmation time with a business and either side cancels at that confirmation time, I see that as being the purpose of a confirmation time.
Now again, I will give him an hour for his 45 minutes because I believe in always going the extra mile but I was curious as to the opinions on an industry standard level. If canceling at a confirmation time, is there an expectation of discount?