Let’s talk!

A: I want to buy an Mp4 for my sister. How about this one?
B: Hhmmm. I think it’s beautiful but it’s too small. The black one is bigger.
A: Yes, but it’s too expensive. I don’t have enough money.
B: Oops! Yes, you’re right. So let’s buy the white one. It’s cheaper and it’s nice, too.
A: And it’s white, my sister’s favourite colour. I think she will like it.