Definition: 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'.
Input:  Person1:       The poor girl is up to the eyes in study all the day . 
 Person2:Yeah , she has a lot of homework . 
 Person1:        Today's children have not the chance to play , to make fun of them . 
 Person2:Right . So in some way we are happier . 
 Person1:        Yeah , at least when we are children , we have not so much homework to do . 

informal