乘坐火车应该说些什么?

这列火车在我们这站停留几分钟？
How long does this train stay at the station?

这个座位有人坐吗？
Is this seat vacant?

我走开时请你帮我保留这个座位好吗？
Will you please keep this seat for me while I am away?

这班火车什么时候到台南？
What time is the train due in Tainan?