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:       Hi , how are you doing ? 
 Person2:Everything's great . And you ? 
 Person1:        Same here.Have you seen any new films recently ? 
 Person2:No , I haven't had a chance to . But I have been watching a Chinese TV scries called " Chinese-Style Divorce " . 
 Person1:        Oh . really ? I saw it two years ago . It's worth seeing and it's thought-provoking . 
 Person2:Yeah . I found it is so close to our life . 
 Person1:        It reflects some of our difficulties in this ever-changing world . 
 Person2:You said it . You know , the divorce rate has been on the rise in recent year . 
 Person1:        Well , it's said that a lot of young people favor getting married quickly which tend to end quickly too . 
 Person2:I know a couple who divorced a week after getting married . 
 Person1:        Oh , that's too short-lived . 
 Person2:That's true . It's said the short-lived marriage is typical of the post - 80s ' generation . 
 Person1:        II can't agree more . The only-child-generation in China tends to know little about marriage . 
 Person2:Definitely.They don't take relationships and marriages very seriously . 
 Person1:        In their mind , love is nothing but passion and marriage is over once the passion is gone . 
 Person2:I think , as the saying goes haste makes waste , it is the same with marriage . 

informal