YOU SAID:

do you have a sister that is willing to go out with my little brother lol...

INTO JAPANESE

私の弟と一緒に出かけようとする姉妹がいますか？

BACK INTO ENGLISH

Do you have any sisters going out with my brother?

INTO JAPANESE

私の兄弟と一緒に出かける姉妹はいますか？

BACK INTO ENGLISH

Is there any sister going out with my brother?

INTO JAPANESE

兄と一緒に出かける妹はいますか？

BACK INTO ENGLISH

Do you have a sister to go with your brother?

INTO JAPANESE

兄弟と一緒に行く姉妹がいますか？

BACK INTO ENGLISH

Do you have a sister who goes with your brother?

INTO JAPANESE

あなたの兄弟と一緒に行く姉妹がいますか？

BACK INTO ENGLISH

Do you have a sister who goes with your brother?