Y: I need your help.

Y:我需要你的帮助。

X: Oh, what's up?

X:哦，怎么回事呢?

Y: I locked myself out. What do you suggest I do?

Y:我把自己锁在外面了，你说说看我该怎么做?

X: Well, the best thing to do is to go down to the front desk and ask for a duplicate key.

X:嗯，最好的办法就是下楼到前台去拿把备用钥匙。