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:       Ugh . Another advertisement . They ’ Ve added two hours of advertisements to a two hours movie .  
 Person2:Yeah . We ’ re never going to get to the end of this one .  
 Person1:        Why are we watching it anyway ?  
 Person2:Well , it does have a lot of girls in it .  
 Person1:        True . True .  
 Person2:Do you think Bruce Willis just drank a Coke for his health ?  
 Person1:        Really ? Did Coke pay him for that ?  
 Person2:Of course .  
 Person1:        You want something to drink ?  
 Person2:Yeah , Got a Coke ?  
 Person1:        Sure .  
 Person2:Hurry , the movie is coming back on . 

informal