Making arrangements

Lourdes.- Hi Marina.I've got a new DVD.
Do you want to watch it with me?
Marina.- Yeah, of course. When?
Lourdes.- How about Friday night?
Marina.- Sorry! I'm busy.I'm going to sleepover at
Sia's house.
Lourdes.- I'm free on Sunday morning. What about you?
Marina.- I'm not doing anything.
Lourdes.- Great. Let's meet on Sunday, then.
Do you want to come round to my house at six o'clock?
Marina.- Yes, all right.See you then.