There's a seriously awesome feature in Google Business Profiles that almost no businesses are using. Take a look at these search results for Roofers Seattle. You can actually book an appointment with them right through the Google Business Profile.
Just click this button and I get this nice little interface that I can book an appointment with.
If you're in an industry like a hair salon, nail spa, any kind of service business, you'll have this button for booking. So if you click that, then you can see the options. You can actually set up booking with a featured book button.
This is the one that will let you book directly, but it's only through a series of preferred partners.
If you are using any of these systems for your own booking, then connect this directly to your Google Business Profile and that way people can book with you right from the search results. If you have this option on your Google Business Profile, make sure you connect it.