Burger Cashier Fast food game

You have been promoted from fry cook to cashier at the burger shop. Take orders from customers and enter it into the cash register. You have to enter the order's items in the right size, amount, and order or you start the order all over again. You also must finish taking the order before the customer's patience runs out. The customers' orders will get progressively larger and more complicated and their patience also gets shorter. You unlock new fast food items as you move through the levels. 
There are 100 levels and 19 food items including 6 types of burgers, 3 sides like french fries, 4 types of soft drinks, and 6 desserts. When you complete all 100 levels with all perfect scores, you get a surprise fast food item. Train to be the best burger shop cashier!