for(var j=0; j<result.results.length; j++){
    oTable.draw();
    oTable.row.add([
    result.results[j].airline,
    result.results[j].from,
    result.results[j].to,
    result.results[j].duration,
    result.results[j].fare,
    '<button id="button-'+j+'" class="btn btn-change1 book_btn" type="button">book</button>',
    ]).draw();
};

//datatable declaration

var oTable = $('#search').DataTable({
    "bDestroy": true,
    "aaSorting": [[4, 'asc']],
    "bPaginate": true,
    "bInfo": false,
    "bFilter": true,
    "bScrollCollapse": true,
    "fnInitComplete": function() {
        this.fnAdjustColumnSizing(true);
    }
});