Which platform does the train No.83 leave from?83号火车从哪个站台出发？

今天的几个句子是发生在火车站的：1.Are there any seats for London?有去伦敦的坐票吗？2.What time do we get to Manchester?我们什么时候到达曼彻斯特？3.It's an express train.这是一趟快车。4.What's the charge for delivery?托运费是多少？