根据短文内容，判断正误。

(L=Lily, J=Jim)L: Hello, Jim.

J: Hi, Lily! Who are they?

L: This is Lucy. She is my sister.

J: Who is he?

L: He's my father. He is a doctor.

J: Is that your mother?

L: Yes, she is. And she's a worker.

J: Oh, you have a happy family.