Am I missing anything, what's the differentiation
"How many FTEs do you use to manage appointment setting and calendaring for your practice right now?"
"What's your no-show rate?"
"How much more money would you make if your most lucrative patients on average booked appointments two to four weeks earlier and your money-losing ones booked two months later?"
The answers to these questions likely end up with someone realizing you could save them $100k+ a year and make them $500k+ a year (I here imagine numbers for a small practice with absolutely no knowledge) and therefore they should absolutely take a free trial and then pay you $500/month in perpetuity.