$('#ajax-table').DataTable({
  ajax: {
    url: '/get_dataset',
    dataSrc: 'lines',
  },
  columns: [
    {title: 'Season', data: 'season'},
    {title: 'Episode', data: 'episode'},
    {title: 'Character', data: 'character'},
    {title: 'Line', data: 'line'}
  ],
  order: [['2', 'desc']]
});