Q: 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: The answer is zero ! What a let-down !
Person2:I really want to take him over my knee .
Person1: No hard feelings . After all , he is a child .
Person2:If you say so !
A:
informal