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从A---G选项中选出能填入空白处的最佳选项，补全对话（有两项多余）。
（A man wants to buy a ticket at the station. M is for man. A is for assistant.）
A: Good morning! Can I help you, sir?
M:1．Could you tell me the time of the last train to Beijing this evening?
A: There’s one at 8:30. But I’m afraid all the tickets have been booked already.
M:2．
A: The first train leaves at 9:15.
M:3．
A: It arrives at 12:30. But may be a little late because of the bad weather.
M: OK!4．
A: Eighty yuan and half of it for a child below 12.
M:5．I’d like two tickets and another one for a child at the age of ten, Here is the money.
A: Thank you!