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 see that chick over there ?  
 Person2:The one in the red shirt ?  
 Person1:        Yeah . Isn't she hot ?  
 Person2:She's alright .  
 Person1:        Just alright ? ! ? She's hot !  
 Person2:Why don't you go talk to her ?  
 Person1:        You think she's out of my league ?  
 Person2:Hell no ! You're just a chicken that's all .  
 Person1:        C'mon . I get nervous when I talk to girls .  
 Person2:Why don't you go stand next to her for a while and if an opportunity comes up , strike a conversation .  
 Person1:        What do I talk about ?  
 Person2:It doesn't matter . You gotta find what she's interested in and go with that .  
 Person1:        I don't know ...  
 Person2:Do you want me to go talk to her ?  
 Person1:        No . Stay away from her .  
 Person2:If you don't do anything , I'll bet somebody else will .  
 Person1:        Ok already . I'll try . 

informal