It has obvious uses for telemarketing,but it can also be used for applications such as appointment reminders,or a confirmation or notification system,where live interaction between two humans is not necessary.

• 显然这在用电话做生意中是有用处的。它也能用于约会提醒程序一类的应用，或者确认或通知系统，在这些场合，不必一定需要两个人之间的交互通信。