How do you quote dialogue when more than one person is talking?

I'm writing an essay and I'm quoting almost a page of two people talking. Here is an example.

“’What have you done?’ asked Prometheus.

‘Down on earth’ answered his brother, ‘there is a green, grassy clearing, ringed by tall trees'"

I know when quoting a quote you have to do this "he laughed and said 'I love this song.'"

But when two people are talking in something i'm quoting do i have to indent when each person talks, like in my example.