There was somebody to oversee the use of equipment and help users, if they would not be able to do something themselves.

有人负责监管所有设备的使用，并且向用户（假如他们无法依靠自身的努力来完成某些事情的时候）提供帮助。

No. Sorry. Somebody? Hello? There are two people stuck on an escalator and we need help. Now, would somebody please do something?

没有，抱歉。有人吗？这儿有两个人困在自动扶梯上了，我们需要帮助。有人在吗？

No. Sorry. Somebody? Hello? There are two people stuck on an escalator and we need help. Now, would somebody please do something?

没有，抱歉。有人吗？这儿有两个了，我们需要帮助。有人在吗？