Is there any Booking/Reservation system for Craft 3? I couldn't find any booking/reservation system for Craft. Is there any? I found questions from 2014, so things could change.

Maybe there is community-approved booking/reservation service that is commonly used with Craft, but it doesn't have the native plugin?

Or maybe it can be done within Craft core? I'm open to ideas.

If you saw a Craft project with booking/reservations feel free to comment it here
Whilst one could build a booking system within Craft either with judicious use of Twig, Channels, and Entries or with a custom plugin it doesn't make a huge amount of sense to reinvent the wheel. Especially when booking management systems are deceptively complex when you get past the initial idea.

It would be possible to integrate pretty much any third party booking system into Craft with a bit of custom plugin development.