Why did Mary call home?

M: Hello.
W: Hello, dad?
M: Yes...Mary! How are you? Anything wrong?
W: Oh, no. I just wanted to call and see !how you and Mom were. It’s been quite a while since I saw you last time.
M: Oh, we’ve both fine. Your mother is down at the new shopping center shopping.
W: For a new dress?
M: No, for shoes this time, I think. How’s David?
W: He’s fine.  He likes his work and was given a raise last month by Mr.Smith. We were all pretty pleased about that.
M: Yes, I think you should be. And how are the children?
W: Well, George’s home from school today. It’s nothing serious, just a bad cold. And it’s his birthday, too !
M: Oh, I thought his birthday was May 24th.
W: No. April 24th.
M: Well, that’s too bad. Tell him we’ll send him a present.
W: All fight. Diane’s still taking dancing lessons.
M: She must be pretty good by now. How about Tom?
W: He’s OK, too. He’s having a part-time job at a garage now.
M: Well, it’s certainly good to hear your voice.
W: OK, dad. Nice talking to you and give Mom our love.
M: All right. Good-bye.