You are given a conversation between two people. 'Person1:' and 'Person2:' are used to separate their respective dialogues. You are required to assign a label 'formal' if there is an absence of emotion and a presence of questions anywhere within the conversation. If such pattern is not found assign the label 'informal'.

Person1: It ' s really terrible !
Person2:What are you talking about ?
Person1: Don ' t you see many parents are forcing there children ' s hands to learn something they think important to their children . But the children are not interested in it at all .
Person2:You said it . Many parents just don ' t understand know how to educate their children .
formal