## Coffeeshop requirements
1. You are the owner of a coffee shop and need to run all the business activities of the entire coffee shop
1. When customers enter the door, they can see the product introduction in the store, including items and prices
1. Customers can choose to buy coffee for in-use or take-out
1. The customer is brought to the seat by the server for ordering
1. After ordering, the server will hand over the order to the front desk
1. The front desk will hand over the entire order to the chef and barista at the back for meal preparation
1. When the meal preparation is completed, the waiter delivers the meal to the customer, and attaches a detailed order
1. Customers need to pay according to the order details, which can be cash or credit card, or even WeChat payment
1. When customers leave the store after finishing their meal, the store waiter needs to clean up the table and the environment in order to greet the next group of customers
1. Baristas and chefs need to consider whether the raw materials in stock are enough to support the ordering of these guests. If there are not enough raw materials, they need to inform the service staff that they cannot accept the ordering of the item, and start the purchase of the raw materials in stock.
1. When customers walk in coffeeshop, the servers/counter staffs should offer the menu or inform there is a menu on the wall.
1. When baristas making coffee, should inform inventory manager if there is not enough beans or milk to prepare.
1. Once the material is not enough, should inform inventory to replenishment.