def index
  respond_to do |format|
    format.json {
      render reservation_delivery_response(:json)
    }
    format.xml {
      render reservation_delivery_response(:xml)
    }
  end
end

private
  def reservation_delivery_response(arg)
    @reservations = CrsReservation.reservation_delivery(params)
    if @reservations
      {arg => @reservations}
    else
      {:text => 'You are not permitted to view this location.'}
    end
  end