A: My wife's birthday is today. I need some flowers.
B: We have lots of fresh red roses.
A: How much do the roses cost?
B: $20 a dozen.
A: That sounds good. Last year I paid $30.
B: Yes, you came here on the right day. They're on sale today.
A: No, I'll just give her the roses and a card.
B: She should be very pleased with these roses.