YOU SAID:

he said that she told that guy to sell her his dress

INTO JAPANESE

彼女はその男にドレスを売るように言ったと彼は言いました

BACK INTO ENGLISH

He said she told the man to sell the dress.

INTO JAPANESE

彼女は男性にドレスを売るように言ったと語った。

BACK INTO ENGLISH

She said she told the man to sell her the dress.

INTO JAPANESE

彼女はその男性にドレスを売るように言ったと語った。

BACK INTO ENGLISH

She said she told the man to sell her the dress.