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:       I can't believe it ! I lost .  
 Person2:It looks like you have to buy tickets for us , Jason . And we're not going to see an action movie !  
 Person1:        That's not fair , you got all the easy questions .  
 Person2:I guess that's just the luck of the draw .  
 Person1:        I want a rematch . Let's play again .  
 Person2:Sorry , not tonight ! 

informal