We've just moved into a house.
Really? Congratulations!
Thank you, and we want to buy a new television set.
What kind of television do you want to buy?
A colour TV set, of course, but I'm not sure about the size. Maybe we should buy a big one. If we buy a small one, we might have to change it in a few years' time for a bigger one. That would be a waste of money. What's your opinion?
I don't think it's necessary to buy a very big one.
Any reason?
Yes. As I know, your sitting room isn't very big. If you put in a very big television, it will be bad for your eyes, and a smaller TV set can still pick up good programmes.
Mm, that's quite true. I'll think about it.
You'd better make a quick decision because the price may go up soon.