Laravel éloquent de dates
$from = date('2018-01-01');
$to = date('2018-05-02');
Reservation::whereBetween('reservation_from', [$from, $to])->get();
Nasty Narwhal
$from = date('2018-01-01');
$to = date('2018-05-02');
Reservation::whereBetween('reservation_from', [$from, $to])->get();