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:       Hey , Ben ... did you catch the game last night ?  
 Person2:Uh ... what game ?  
 Person1:        Baltimore defeated Texas by 17 points !  
 Person2:Um ... and what sport are we talking about here ?  
 Person1:        Football of course !  
 Person2:Oh ... football . Football is cool . I usually try to catch the World Cup finals .  
 Person1:        No , I'm talking about American football . The World Cup is soccer .  
 Person2:Oh , I understand . I can't say I'm a big fan . I'm from China , and football doesn't have a really big following over there .  
 Person1:        So Chinese people prefer soccer or basketball ?  
 Person2:Yes , I think so . But to be perfectly honest , I'm not really a sports nut.When I was in high school I played on the school volleyball team . Are you a diehard football fan ?  
 Person1:        Oh , certainly . I wouldn't miss a game for the world . My girlfriend says I have an addiction . And actually , if I had to choose between her and my games ... I'd probably pick football .  
 Person2:It seems Americans are very passionate about sports . Is this just a part of your culture ?  
 Person1:        Oh , yeah ! I think the love of sports starts when kids are very young . Americans come from many different backgrounds so I guess sports are something we can all enjoy together . 

informal