阅读对话，判断“正确”还是“错误”。

Betty: (Knocking at the door)

Mr. Han: Who is it? Go and see, Meimei.

Han Mei: Oh, it's you, Betty. Glad to see you.

Betty: Hi, Han Mei. Glad to see you, too. Is everyone in?

Han Mei: Yes. We are all here. Come in, please.

Betty: Thank you.​