private void PercentOff(Offer offer, Booking booking, BookingOffer bookingOffer)
 {
     if (offer.MinSpend < booking.BookingTotal())
     {
         bookingOffer.Value            = (offer.Value * (booking.BookingTotal() / 100)) * -1;
         bookingOffer.OfferCode        = offer.OfferCode;
         bookingOffer.OfferDescription = offer.OfferDescription;
         bookingOffer.OfferID          = offer.OfferId;
         bookingOffer.OfferType        = "Percent Off";
         booking.AddBookingOffer(bookingOffer);
     }
 }
        }         //end addOffer

        private void MoneyOff(Offer offer, Booking booking, BookingOffer bookingOffer)
        {
            decimal bookingTotal = booking.BookingTotal();

            if (offer.MinSpend < bookingTotal)
            {
                bookingOffer.Value            = offer.Value * -1;
                bookingOffer.OfferCode        = offer.OfferCode;
                bookingOffer.OfferDescription = offer.OfferDescription;
                bookingOffer.OfferID          = offer.OfferId;
                bookingOffer.OfferType        = "Money Off";
                booking.AddBookingOffer(bookingOffer);
            }
        }