よ

もう終(お)わりましたよ。

Mō owarimashita yo.

It's already over, you know.

Telling someone something they don't know

その店(みせ)、日曜日(にちようび)は休(やす)みですよ。

Sono mise, nichiyōbi wa yasumi desu yo.

That shop's closed on Sundays, you know.

Saving someone a wasted trip

大丈夫(だいじょうぶ)ですよ。

Daijōbu desu yo.

It's fine, really.

Reassuring someone — よ makes it firmer