Read the dialog and answer the question.

Mrs. Eny: May I have your attention, please? You have to submit the assignment on my table now. Have you finished it yet?

Andry: Yes, I have.

Mrs. Eny: Hey, Dicky, what about you? Have you finished it yet?

Dicky: Yes, of course. I have, Ma'am.

Mrs. Eny: And what about you, Racha?

Racha: I'm sorry, Ma'am. Unfortunately, I haven't. I forgot it.

Imada: Hey, Racha! What's up with you, Bro? What did you do last night?

Racha: Sorry, I have lied. I did not bring my assignment. I left it at home.

Mrs. Eny: Ok. You have to do it again. There is enough time to do it.

Racha: Yes, Ma'am. Thank you so much.

Who are involved in the dialogue?