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:       What are you reading ?  
 Person2:Gee ! You scared me !  
 Person1:        Aha , Fitness Consultant . Very good , Don't you know about the rules in this office ?  
 Person2:Yes , Ma'am . No magazines during the office hours . I'm sorry .  
 Person1:        Well , don't do this again next time . What is it about , anyway ?  
 Person2:It is about sports for white-collar workers , people like you and me .  
 Person1:        What kind of sports ?  
 Person2:Aerobic sports , for example , jogging , yoga , skating ...  
 Person1:        Interesting . What were you reading just now ?  
 Person2:Stretching exercise after sitting a long time .  
 Person1:        Really ? That sounds interesting !  
 Person2:Can I have my magazine back now ?  
 Person1:        No . It's confiscated for now . And I will return it to you after I finish reading it . 

informal