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 doing ? 
 Person2:What am I doing ? What am I doing ? Don ’ t you know what day it is ? 
 Person1:        Mumm . no . 
 Person2:It ’ s only the day when the world ’ s biggest sporting event is kicking off . 
 Person1:        What ? 
 Person2:The World Cup ! The first match is today ! It ’ s Mexico vs . South Africa ! It ’ s going to be a really good match ! Both teams have a very strong offense and have skilled players . I think that South Africa 
 Person1:        I have no idea what you ’ re talking about . The only sporting event we watch at home is the Super Bowl . 
 Person2:This is bigger than the Super Bowl , man ! Teams from 32 countries compete against each other every four years and fight to win that trophy . They first start in a group stage with bigger groups , each g 
 Person1:        Sounds interesting , but soccer doesn ’ t really appeal to me . 
 Person2:Are you kidding ? Over seven hundred million people watched the final match of the World Cup ! It ’ s a very exciting and nerve wracking sport ! Each nation is cheering on their team , hoping they will bec 
 Person1:        All I know about soccer is that you can ’ t use your hands and that players are always falling down , trying to get a free kick or penalty kick . It seems like a sissy sport to me ! 
 Person2:Whatever , I ’ m going to go watch the opening match . 

informal