Reading from XML and adding to DataGrid AS3

I've done an example but I have a problem with it the dataProvider only reads 2 tags in the xml file and adds it in the DataGrid. here is the xml file.

<airlines>    <flightdescription>        <id> 1 </id>        <flightno> usa1000 </flightno>        <origin>Chicago</origin>        <destination>Boston</destination>        <departurdatetime>2015/03/29 14:45 </departurdatetime>        <arrivaldatetime>2015/03/30 23:45</arrivaldatetime>        <img src='US-Airways-Logo'/>    </flightdescription></airlines>

I've shortened the xml file.

and this is the as3 code:

var myDataGrid:DataGrid = new DataGrid();

myDataGrid1.addColumn("flight no");

myDataGrid1.addColumn("origin");

myDataGrid1.addColumn("destination");

myDataGrid1.addColumn("departure date & time");

myDataGrid1.addColumn("arrival date & time");

  var dp:DataProvider;

var urlAirlines:String = "airlines.xml";

var reqAirlines:URLRequest = new URLRequest(urlAirlines);

var urlLoader:URLLoader = new URLLoader();

urlLoader.addEventListener(Event.COMPLETE, AirlinesHandler);

urlLoader.load(reqAirlines);

function AirlinesHandler(event:Event):void {

    var xmlDP:XML = new XML(urlLoader.data);

    dp = new DataProvider(xmlDP);

    myDataGrid1.dataProvider = dp;

    //myDataGrid1.columnCount = mydataGrid1.width;

    myDataGrid1.rowCount = myDataGrid1.length+2;

    myDataGrid1.columns[0].width = 70;

    myDataGrid1.columns[1].width = 70;

    myDataGrid1.columns[2].width = 90;

    myDataGrid1.columns[3].width = 130;

    myDataGrid1.columns[4].width = 130;

    myDataGrid1.horizontalScrollPolicy = ScrollPolicy.ON;

    trace(dp);

    trace(myDataGrid1);

}

the output only reads the tags Origin and Destination and adds them in DataGrid. anyone have any ideas?? Thank you in advance.