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:       Her dress looks funny . 
 Person2:I wouldn't say that . It looks fine to me . 
 Person1:        Are you kidding She is behind the times . That style went out last year . 
 Person2:Oh , come on , as long as it looks good on her . 
 Person1:        Well , you ’ re really as out-dated as she is . 
 Person2:You ’ re darn right . I am out of style . So what What's the point of keeping yourself in style 
 Person1:        No wonder you never buy me a new dress . 

informal