How to serialized an object to xml in WP8

I have created a class named BookingPassengerDetails and referred an object in App.xaml.cs to store set of values across the project. How can I serialize the object to xml file.

BookingPassengerDetails.cs contains the following

   public class BookingPassengerDetails
{

    public string From { get; set; }
    public string To { get; set; }
    public string ShortFrom { get; set; }
    public string ShortTo { get; set; }
    public string NumberofAdults { get; set; }
    public string NumberofChildren { get; set;}
    public string NumberofInfant { get; set; }
    public List<Person> Person { get; set; }

}

My object reference

      public static BookingPassengerDetails passengerObject;

I stored the values as

      App.passengerObject.NumberofAdults=TextblockName.Text;