def build_itinerary_array( user )
    itinerary = [ ]

    if not user.bookings.blank?
      user.bookings.each do |b|

        if not b.air_itineraries.blank?
          b.air_itineraries.each do |i|
            if not i.air_legs.blank?
              i.air_legs.each do |l|
                if not l.booked_flights.blank?
                  l.booked_flights.each do |f|
                    itinerary << { :start_datetime=>f.departure_timestamp.to_time, :type=>'flight', :object=>f }
                  end
                end
              end
            end
          end
        end

        if not b.booked_hotels.blank?
          b.booked_hotels.each do |h|
            itinerary << { :start_datetime=>h.checkin.to_time, :type=>'hotel', :object=>h }
          end
        end


        if not b.booked_cars.blank?
          b.booked_cars.each do |c|
            itinerary << { :start_datetime=>c.pickup_timestamp.to_time, :type=>'car', :object=>c }
          end
        end

      end #end @user.bookings.each
    end #endif not @user.bookings.blank?

    itinerary.sort! { |x,y| x[:start_datetime] <=> y[:start_datetime] }

    return itinerary
  end