Hi,
I wrote two dialogues. Will you check them?
No. 1
M: My room is so hot that I can hardly breathe.
F: Why don't you buy [get] an air conditioner? I heard they're
having a special sale downtown this weekend.
M: Well, but I can't afford (to buy) it. Say 'well' or 'but', but you don't need to say both together.
No. 2