Array of arrays

HTML

<script src="https://cdn.datatables.net/1.10.16/js/jquery.dataTables.min.js"></script>
<link rel="stylesheet" href="//cdn.datatables.net/1.10.16/css/jquery.dataTables.min.css">
<table id="reservations" >
        <thead>
            <tr>
                <th>ID</th>
                <th>User</th>
                <th>Open Date</th>
                <th>Ticket Status</th>
                <th>End Date</th>
            </tr>
        </thead>
        <tbody>
        </tbody>
  </table>

CSS

div {  
margin: 5px;    
}

table {
 border: 2px solid black;   
}

td {
    padding: 10px;
 border: 1px solid lightgrey; 
}

JavaScript

var reservations = [[{'id': 1021972,'Aging_Un_investigated_Issue': '0.94', 
'User': 'John P.', 'Open_date':'2017-08-04 01:34:18','End_date':'2017-09-05 00:29:01', 
'Ticket_status':'Transferred'},{'id': 1036722, 'Aging_Un_investigated_Issue': '0.01', 
'User': 'John P.', 'Open_date':'2017-09-01 00:34:18',
'End_date':'', 'Ticket_status':'Researching'},{'id': 1015621, 
'Aging_Un_investigated_Issue': '0.11', 'User': 'John D.','Open_date':'2017-01-01 00:00:18',
'End_date':'2017-09-01 20:20:57','Ticket_status':'Closed'}],
[{}],
[{}],
[{'id': 1045971,'Aging_Un_investigated_Issue': '0.23', 
'User': 'John C.', 'Open_date':'2016-05-01 02:32:18','End_date':'2017-09-05 12:29:01', 
'Ticket_status':'Transferred'},{'id': 1035522, 'Aging_Un_investigated_Issue': '0.02', 
'User': 'John C.', 'Open_date':'2015-08-01 00:34:18',
'End_date':'', 'Ticket_status':'Researching'},{'id': 1223621, 
'Aging_Un_investigated_Issue': '0.11', 'User': 'John C.','Open_date':'2016-01-01 00:00:18',
'End_date':'2017-09-02 21:20:57','Ticket_status':'Closed'}]];

var tbody = $('#reservations tbody'),
    props = ["id", "User", "Open_date", "Ticket_status", "End_date"];
    
$(reservations)
	.map((i, reservation) => reservation)									// "Flatten" your list to make it easier to work with.
	.filter((i, reservation) => Boolean(reservation.id))	// Remove all items which do not have an `id`
	.each(function(i, reservation) {
    var tr = $('<tr>');
    $.each(props, function(i, prop) {
 		$('<td>').html(reservation[prop]).appendTo(tr);  
 	});
 	  tbody.append(tr);
	});

$(document).ready(function(){
    $('#reservations').DataTable();
});