Jquery UI Autocomplete dropdown with php code

$("#training_institutes_courses").autocomplete({
source:function( request, response ) {
        $.ajax({
          url: baseurl+"search/training_institute_courses",
          data: "q="+ request.term,
          success: function( data ) {
   var obj = JSON.parse(data);
if(obj.err_code==1){
response($.map(obj.message, function(v,i){
  return {label: v.name};
                }));
}else{
var result = [
{
label: 'There are no matches for your query: ' + response.term, 
value: response.term
}
];
response(result);
}
  //alert(data);
  //response(data.message);
 
          }
        });
      },
      minLength: 2
});