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:       I've been thinking about getting my hair cut . 
 Person2:I thought you were going to let it grow out long . 
 Person1:        I said that , didn't I ? But I just don't know what to do with it . 
 Person2:You're in one of those in-between stages , aren't you . 
 Person1:        Yes , it's not short enough to be wash-and-go and not long enough to do anything fancy . 
 Person2:Have you thought about wearing a hat ? 
 Person1:        Everywhere I go ? 
 Person2:Well , it's one way to get through the in-betweens if you really want to grow it out ! 

formal