Autocomplete input from api rest get methot

I'm trying to autocomplete a form using this code

<script type="text/javascript"> 
    $('#input_15').autocomplete({
    source: function (request, response) {
         $.getJSON("ws_ServicioCLOUD/Consulta.aspx?cedula=" + request.term, function (data) {
          console.log(data);
            response($.map(data, function (value, key) {
                console.log(value);
                return {
                    label: value.label,
                    value: value.value
                };
            }));
        });
    },
    minLength: 1,
    delay: 100
});
    </script> 

Student Name :

{"empleado":[{"CEDULA":"111111111","NOMBRES":"VICENTE RAMIRO","APELLIDOS":"BANEGAS GUERRERO","EMAIL":"correo@correo.com"]}

So is not showing noting and when I try complete someting I'm getting and Object error.