YOU SAID:

I went on a trip because it was summer vacation.

INTO JAPANESE

夏休みだったので旅行に行きました。

BACK INTO ENGLISH

Since it was summer vacation, I went on a trip.

INTO JAPANESE

夏休みだったので、旅行に行きました。

BACK INTO ENGLISH

It was summer vacation, so I went on a trip.

INTO JAPANESE

夏休みだったので、旅行に行きました。

BACK INTO ENGLISH

It was summer vacation, so I went on a trip.