YOU SAID:

so i asked my friend if she would like to join me for dinner

INTO JAPANESE

だから私は友達に夕食に参加したいかどうか尋ねました

BACK INTO ENGLISH

So I asked my friend if he wanted to attend dinner

INTO JAPANESE

それで私は友人に夕食に出席したいかどうか尋ねました

BACK INTO ENGLISH

So I asked my friend if he wanted to attend dinner