阅读对话，回答问题。

Toby: Look at Sam's dreams. What did he want to be at the age of eight?

Aggie: He wanted to be a scientist and fly to the moon.

Toby: What was his dream when he was twelve?

Aggie: He liked swimming. So he wanted to join the National Swimming Team.

Toby: I believe work hard and his dream will come true.