Among our customers there are several large water parks which located in two regions. At the beginning of the season there are not many tourists and the weather is not always perfect. Accordingly, the water park is partially idle. Combating this period with help of simple price reduction is not the best way. Because of by lowering the price, we will lose part of the profits from those visitors who were ready to buy a ticket at full price. Also, leaving the standard price, we do not pick up those customers who could come if they have had the discount.