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:       How good are you at sports , Bill ? 
 Person2:Are you kidding ? I ’ m terrible ! But I love to watch sports . I go to football or baseball games a lot . And I read sports magazines every week . 
 Person1:        Wow ! 
 Person2:Do you like sports , Janice ? 
 Person1:        Oh , yes . I like to exercise . But I don ’ t watch sports or buy sports magazines . I don ’ t have much time to do those things . 
 Person2:Oh , I see . You know , we spend time doing different sports . How much time do you spend exercising ? 
 Person1:        Well , I guess I exercise about two hours a day . I do aerobics three times a week , and the other days I play badminton with my husband . I always feel good afterward . 
 Person2:That ’ s great ! I ’ Ve heard people say that before . 
 Person1:        Well , why don ’ t you try to get some exercise ? It ’ s difficult , but very rewarding . 
 Person2:Oh , I ’ m too lazy to play sports , and I ’ m not good at anything either . It hardly excites me . 

informal