More detail displayed when a guests hovers over a date in multi month calendar widget

I like on Airbnb calendar it shows available dates to select (greying out dates that aren't available for check in for instants) - then it says if you click on that date why it's not available. 
Would it be possible to add this functionality to the multi month calendar widget. Then people aren't getting their hopes up that the selected dates they wanted are free to be told in the booking widget that they aren't available?
Thanks

Ben