Autocomplete Jquery remove everything after ' - '

I use a simply JQUERY Autocomplete to show possibles duplicates for certains records, like Name or address when user fill in a textfield.

Here code

<script type="text/javascript">
                $(function() {
                    var availableTags = <?php include('ajax/ajax_show.php'); ?>;
                    $("#name_value").autocomplete({
                        source: availableTags,
                        autoFocus:true
                    });
                });
            </script>

Below text filed are displayes results.

Name[____________________]
 Paul - 121.456.789-00
 Robert - 122.456.789-00
 Cid - 123.456.789-00

How to remove all after - (space hyphen space) and everything after it and have in textfield only name like Paul, Robert or Cid?