YOU SAID:

I was going to go to bed early last night, but I ended up partying until dawn.

INTO JAPANESE

昨夜早く寝るつもりでしたが夜明けまでパーティーになりました。

BACK INTO ENGLISH

I was going to go to bed early last night, but we had a party until dawn.

INTO JAPANESE

昨夜早く寝るつもりでしたが夜明けまでパーティーをしました。

BACK INTO ENGLISH

I was going to go to bed early last night, but I had a party until dawn.

INTO JAPANESE

昨夜早く寝るつもりでしたが夜明けまでパーティーをしました。

BACK INTO ENGLISH

I was going to go to bed early last night, but I had a party until dawn.