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 ’ s your favourite ball sport ?  
 Person2:I like basketball . I really enjoy watching the NBA games on TV .  
 Person1:        Who ’ s your favourite player ?  
 Person2:I don ’ t really have one but I support Huston .  
 Person1:        Do they have a good team ?  
 Person2:I think they do , but I ’ m biased . They have a good manager and a great coach .  
 Person1:        I can ’ t keep up with the game . The players play so quickly that I can hardly see what they are doing .  
 Person2:I have the same problem . The players are really very skilful . I wish I could play that well .  
 Person1:        You play for an amateur team , don ’ t you ?  
 Person2:Yes , I do . We ’ re doing pretty well this season . We ’ Ve won most of our games , but we ’ re not top of the league table .  
 Person1:        How many more games are there this season ?  
 Person2:We ’ Ve got four more games . I hope we can win all of them . 

formal