Create a dialog including expressions asking and giving opinions about air pollution. And at least 4 conversations. Thank you:)

A : what do you think about the air pollution? I think it's really bad
B : yeah. I think so too. My granpa said it was really nice back in his old days.
A : i wish we can breath air without pollution. how should we reduce it?
B : maybe plant more trees?
A : yes, that's a good idea!