Can I get a seat for the D207 on Wednesday?
我想買一張週三的D207的車票。
I want to reserve a sleeper to Shanghai.
我想訂一張去上海的臥鋪。
I missed the train. Could you please refund this ticket for me?
我沒有趕上火車。可以幫我把票退了嗎？
Where am I supposed to pay the excess train fare?
我應該去哪兒補票呢？