Am I on the right train to Chicago?

我坐的是往芝加哥去的火车，对吧?

Oh, no. This is going in the opposite direction.

哦，不对。这是开往相反方向的车。

Isn't this the bus to the railway station?

这不是到火车站的车吗?

You're going in the opposite direction.

你方向走错了。