Hello,
Try this - it works for me:
$(".editDialog").on("click", function (e) {
    var url = $(this).attr('href');
    $("#dialog-edit").dialog({
        title: 'Edit Office',
        autoOpen: false,
        resizable: false,
        height: 450,
        width: 380,
        show: { effect: 'drop', direction: "up" },
        modal: true,
        draggable: true,
        open: function (event, ui) {
            $(this).load(url);
        },
        close: function (event, ui) {
            $("#dialog-edit").dialog().dialog('close');
        }
    });
    $("#dialog-edit").dialog('open');
    return false;
});
Hope it will help you!!
Thank You!!