YOU SAID:
We went out for dinner last night.
INTO JAPANESE
私たちは昨夜夕食に出かけた。
BACK INTO ENGLISH
We went out to dinner last night.
INTO JAPANESE
私たちは昨夜夕食に出かけた。
BACK INTO ENGLISH
We went out to dinner last night.
That didn't even make that much sense in English.