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:I'm just trying to complete today's crossword puzzle . Whenever I get the time , I like to do the crossword puzzles in the paper .  
 Person1:        you really like brains that make you think , don't you ?  
 Person2:I guess you could say that . What kind of games do you like ?  
 Person1:        I guess the games I like the most are the ones that I'm good at !  
 Person2:Doesn't everyone ? Which games are those ?  
 Person1:        Well , I like to play darts . Whenever I go to a bar , I usually play for a few hours .  
 Person2:Did you play a lot of games when you were little ?  
 Person1:        My parents used to love to play checkers and dominoes . We used to have family tournaments every weekend .  
 Person2:Do you still like playing those games ?  
 Person1:        Not at all . I never really did , to be honest . What about you ? Did your family used to play games together ?  
 Person2:Everyone in my family really enjoys playing card games .  
 Person1:        Some of my friends play cards on the internet . Have you ever tried that ?  
 Person2:No , I prefer to play with people I know .  
 Person1:        How about mah-jong ?  
 Person2:It's a popular game with some people , but I've never played it .  
 Person1:        I thought everyone in your country were experts at mah-jong !  
 Person2:I hate to disappoint you , but unlike what most people think , we aren't all exactly the same ! 

formal