准备有关客户购买的产品的详细报告。记录并生成客户在特定时间和地点进行的交易的详细说明。包括有关产品的所有详细信息，例如价格、数量和名称。 Preparing detailed reports about products purchased by customers. Record and generate a detail account of transactions made by customers fat a particular time and location. Include all details about products such as price, quantity, and name.