You can try ANE-Alert and Date Picker
For the Alert:
// Defining your callbacks
var myCallback1:Function = function():void { trace("Callback 1"); };
var myCallback2:Function = function():void { trace("Callback 2"); };
// Display a one-button alert popup
AirAlert.getInstance().showAlert("My title", "My message", "OK", myCallback1);
// Display a two-button alert popup
AirAlert.getInstance().showAlert("My title", "My message", "YES", myCallback1, "NO", myCallback2);
For the Date Picker:
// Required params
var currentDate:Date = new Date();
var callback:Function = function(selectedDate:String):void
{
var date:Date = new Date();
date.setTime(Date.parse(selectedDate));
trace("selected date = ", date);
}
// Native extension call
AirDatePicker.instance.displayDatePicker(currentDate, callback);