Browse the topics:

Making booking available only on a certain date or a date range

Dashboard > Webba Booking > Services > Edit service

As mentioned here, you can limit the date selection to a day but also to a range of dates.
In this case, only the date range you have defined will be available in your booking form.

In the example above, we have defined the range from 11/27/2017 to 11/30/2017.