public function airlines()
 {
     $results = \Excel::load('airlines_list.xlsx', function ($reader) {
     })->get();
     foreach ($results as $row) {
         $airline = new Airline();
         $airline->airline_code = $row->airline_code;
         $airline->airline_name = $row->airline_name;
         $airline->origin = $row->origin;
         $airline->provider = $row->provider;
         $airline->active = $row->active;
         $airline->save();
     }
 }