instruction:
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'.
question:
Person1: I ' m sure that the boy will become nobody when he grows up .
Person2:Be careful of what you say , or you ' ll have to eat humble pie .
Person1: Eat humble pie ? Impossible , I ' Ve never been wrong in judging boys like him .
answer:
informal

question:
Person1: If one is rich , is the happy ?
Person2:I don't think so.It ' s impossible to equate wealth and happiness .
Person1: Could I understand what you said as the poorest is the happiest ?
Person2:Of course not.Sometimes a poor man can be extremely miserable .
answer:
formal

question:
Person1: There will be a parade to celebrate National Day this weekend .
Person2:What's the route ?
Person1: From Zhongshan Circus to City Bank .
Person2:If only I could join it !
answer:
formal