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:       Out of every movie that you've seen , which one is your favorite ?  
 Person2:I'm going to have to say that Superbad is the best movie ever .  
 Person1:        You think so , how come ?  
 Person2:Well , Superbad is super funny .  
 Person1:        You're not lying , I found that movie absolutely hilarious .  
 Person2:I didn't know that you saw Superbad before .  
 Person1:        I made sure to be in line to see it the first day it came out .  
 Person2:I couldn't keep from laughing throughout the whole movie .  
 Person1:        I was laughing hysterically the whole time ; my stomach muscles hurt afterwards .  
 Person2:That's exactly how I felt .  
 Person1:        I got the movie when it came out on DVD , do you want to come over ?  
 Person2:I would love to . 

informal