There are no station attendants here, so please buy the ticket at the vending machine.
If you require any assistance, you can speak to the station staff through the interphone available through the vending machine.
ご質問ありがとうございます。
"There are no station attendants here,"＝「ここには駅員がいません」
"so please buy the ticket at the vending machine."＝「なので、券売機で切符を買って下さい。」
"If you require any assistance,"＝「何か質問等ありましたら」
"you can speak to the station staff through the interphone available through the vending machine."＝「券売機にあるインターフォンを通して駅員と話すことができます。」
ご参考に。
アメリカ合衆国 
