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: Dou you think I should join a basketball team , Mary ?
Person2:Why not . If I were you , I certainly would .
Person1: But I'm afraid it will take too much of my time .
Person2:As the saying goes , work value work , play value play . All work and no play make a jucky-dull boy , you know .
Person1: Em , you ' re right .
formal