<input id = "kur" name = "kur" value = "">


<select id="tur" name="tur" class="form-control" required>
<option value="1">1</option>
<option value="2">2</option>
<option value="3">3</option>

<script>
		
$("#tur").change(function(){
    var selection = $('#tur').val();
    switch(selection){
        case 0:
            $("#kur").val("Cindy"); 
            break;
        case 1:
            $("#kur").val("Cindy"); 
            break;
        case 2:
              $("#kur").val("Cindy"); 
            break;
        case 3:
              $("#kur").val("Cindy"); 
            break;
        case 4:
              $("#kur").val("Cindy"); 
            break;
    
 }
});

</script>