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 can ’ t believe my English teacher is making me read pride and prejudice !  
 Person2:Why not ! It ’ s a classic . In fact , it ’ s one of my favorite novels .  
 Person1:        But it ’ s so old .  
 Person2:Don ’ t judge a book by its cover . Do you Kwon what it ’ s about ?  
 Person1:        No , not at all .  
 Person2:First of all , it ’ s a romance novel , set in the early 19th century .  
 Person1:        I didn ’ t realize it was a romance novel . What ’ s the main storyline ?  
 Person2:It ’ s basically about a father who tried to marry off one of his five girls .  
 Person1:        Why does he want to do that ?  
 Person2:Since he doesn ’ t have a son , he hopes that one of the girls will marry a wealthy man . That way , all of his daughters will be cared for .  
 Person1:        Won ’ t they get his inheritance ?  
 Person2:No , that ’ s the problem . Though they are well-off , once he dies , his house will go to his cousin . So , when he dies , the girls will have nothing .  
 Person1:        I see . This sounds interesting ! Maybe my teacher isn ’ t so horrible after all .  
 Person2:So , are you going to read the novel or watch the movie ?  
 Person1:        There ’ s movie ? My teacher didn ’ t tell me that !  
 Person2:That ’ s probably because she wants you to read the book first .  
 Person1:        It would take a lot less time ...  
 Person2:How about this . When you finish the book . I ’ ll get the movie and watch it with you .  
 Person1:        Ok . That sounds like a deal . 

informal