Everything below is fictional. When this gets built for a real business, the service list and hours come from their own site, the way the example below shows.
How this gets built for real
A request, not a live booking system. It doesn't know which times are actually free unless it's connected to the business's real schedule.
Framed as additive, not as fixing something broken. A phone-only model can be a deliberate, working choice. This only catches the person who's still deciding and finds the site outside open hours.
See it built for a real business: Wohl Optics.