Are these sentences correct? If so, which sounds more natural? :

한국어로 말해 주세요. 

저 한테 한국말 이야기해요.

Both sentences ask someone to speak to you in Korean, but how can you ask someone to speak with you in Korean? (Small difference, but it sounds more proactive on the asker's part)

Is this correct? : 저 하고 같이 한국말을 이야기해요.