Uncaught TypeError: autocomplete is not a function in jQuery

I'm struggling to work with jQuery autocomplete to fill a HTML input from database. I wrote the whole code, but I still get this error

Uncaught TypeError: autocomplete is not a function in jQuery

and I can't understand why.

Here is my code:

gethint.php

<?php
    require_once ('connect.php');

    $q=$_REQUEST["q"]; 
    $sql="SELECT nume FROM angajati WHERE nume LIKE '%$q%'";
    $result = mysql_query($sql);

    $json=array();

    while($row = mysql_fetch_array($result)) {
      array_push($json, $row['nume']);
    }

    echo json_encode($json);
?>

profile_admin.php:

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Forms</title>

<link href="css/bootstrap.min.css" rel="stylesheet">
<link href="css/datepicker3.css" rel="stylesheet">
<link href="css/profile.css" rel="stylesheet">
<script src="http://code.jquery.com/jquery-1.9.1.js"></script>
<script src="http://code.jquery.com/ui/1.10.3/jquery-ui.js"></script>
<script src="http://ajax.googleapis.com/ajax/libs/angularjs/1.4.8/angular.min.js"></script>

<!--[if lt IE 9]>
<script src="js/html5shiv.js"></script>
<script src="js/respond.min.js"></script>
<![endif]-->

</head>

<?php  
    require('connect.php');
    //3. If the form is submitted or not.
    //3.1 If the form is submitted

    $username = "";

    date_default_timezone_set('Europe/Bucharest');

    // setting the current date and time
    $date = date('Y-m-d H:i:s');

    if (isset($_GET['user'])){
    //3.1.1 Assigning posted values to variables.
        $username = $_GET['user'];
    }
    else{

        die("Nu esti logat");

    }

    $query = "SELECT * FROM angajati INNER JOIN conturi on conturi.id = angajati.id_cont INNER JOIN incadrare on angajati.id_incadrare=incadrare.id WHERE username='$username'";

    $result = mysqli_query($connection, $query) or die(mysqli_error($connection));

    if (mysqli_num_rows($result) > 0) {
        // output data of each row
        while($row = mysqli_fetch_assoc($result)) {
            $id = $row["id"];
            $name = $row["nume"];
            $prenume = $row["prenume"];
            $departament = $row["departament"];
            $data_angajarii = $row["data_angajarii"];
            $data_nasterii = $row["data_nasterii"];
            $telefon = $row["telefon"];
            $email = $row["email"];
            $adresa = $row["adresa"];
            $poza = $row["poza"];
            $titlu = $row["titlu"];
        }
    }
    else{
        die("Nu esti logat");
    }


?>

<body>

    <div class="container">
      <div class="row">

      <div class="col-md-5  toppad  pull-right col-md-offset-3 ">
       <br>
        <p class=" text-info"><?php echo $date; ?></p>

      </div>
        <div class="col-xs-12 col-sm-12 col-md-6 col-lg-6 col-xs-offset-0 col-sm-offset-0 col-md-offset-3 col-lg-offset-3 toppad" >

          <div class="panel panel-info">
            <div class="panel-heading">
              <h3 class="panel-title">Buna venit, <?php echo $name." ".$prenume ?></h3>
            </div>
            <div class="panel-body">
              <div class="row">

                <div class=" col-md-9 col-lg-9 "> 
                  <table class="table table-user-information">
                    <tbody>

                      <form role="form" action="login.php" method="post">
                        <fieldset>
                            <div class="form-group">
                                <input type="text" name="hint" placeholder="Caută un angajat!" class="form-username form-control" id="hint">
                            </div>
                            <center><button type="submit" style="width:200px;" class="btn">Caută!</button></center>
                        </fieldset>
                    </form>

                    </tbody>
                  </table>
                  <a href="#" class="btn btn-primary">My Sales Performance</a>
                  <a href="#" class="btn btn-primary">Team Sales Performance</a>
                </div>
              </div>
            </div

          </div>
        </div>
      </div>
    </div>



    <script src="js/jquery-1.11.1.min.js"></script>
    <script src="js/bootstrap.min.js"></script>
    <script src="js/chart.min.js"></script>
    <script src="js/chart-data.js"></script>
    <script src="js/easypiechart.js"></script>
    <script src="js/easypiechart-data.js"></script>
    <script src="js/bootstrap-datepicker.js"></script>
    <script src="js/profile.js"></script>
    <script type="text/javascript">
        $(function() {
            $( "#hint" ).autocomplete({
                source: function( request, response ) {
                    $.ajax({
                        url: "gethint.php",
                        dataType: "jsonp",
                        data: {
                            q: request.term
                        },
                        success: function( data ) {
                            response( data );
                        }
                    });
                },
            });
        });     
    </script>   
</body>

</html>

Thanks in advance!