Booking features are available in EG Worksense Book and Flow plans, see all the plans here.
There are two different types of bookings:
Workstation bookings (bookings that are managed in EG Worksense)
3rd party booking systems (bookings that use an integration to 3rd party booking system such as MS O365 or Exchange Server)
Both type of bookings can be used together or separately. For more information see individual pages of the features.