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:       You like movies ?  
 Person2:Yeah , I think it's the best way to relax .  
 Person1:        What type do you like the best ?  
 Person2:Really it depends on my mood . When I am sad or depressed , I like comedies . If I'm feeling good , I'll watch almost anything .  
 Person1:        I see . I generally like movies to help calm me down . I think a sign of a good movie is the ability to bring you into the story as if you were part of it .  
 Person2:Yeah , unfortunately , nowadays directors are often more interested in making money than making a good film .  
 Person1:        True . The movie industry is becoming more and more commercial . You see a lot of expensive movies with little artistic value . I generally think those made in the forties are of higher quality on the average than movies today . You can name a lot of classics from that decade .  
 Person2:Yeah , many of my all-time-favorites were made in the forties . They've already stood the test of time and will stay with us for a long time .  
 Person1:        I'm totally with you on that . 

formal