求翻译，国外朋友写给我的信中的一段。

Tables can have numbers (addresses) and a person at one table can send a note to a person at another table (single person) as a greeting. The person can then choose to respond or not (private network). Shouldn*t be too expensive to implement and it would be unique.
可以为桌子指定号码(地址),这样坐在这桌的人就可以向另一桌的人发送问候信息.接收者进而可以选择是否回应(私人网络). 安装费用应该不会太贵,这个系统也将是很独特的.