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:       Oh , George , what a beautiful day it is today ! The sun is hot and there are just a few clouds scattered here and there ! What a perfect day to be at the beach ! The kids are going to have so much fun ! And we ’ ll be able to relax in the sun while they ’ re playing .  
 Person2:It does seem like the perfect day ! I ’ m glad we chose to get out of the city and enjoy the nice weather ! This looks like the perfect spot ! Ok kids , put on your sunscreen while your mom and I set up camp . Here , Mary , help me lay down these beach towels .  
 Person1:        There we go . Can you help me with the umbrella ? Perfect .  
 Person2:Ok kids , here ’ sa beach ball and a Frisbee , a pail and a shovel . I want to see an impressive sandcastle by the time we leave . Don ’ t stray too far . Wait ! Leave your sandals here or put on your wet shoes .  
 Person1:        And stay in the shallow area . I don ’ t want to see you go any farther than that sandbar ! It ’ s too deep out there and we didn ’ t bring your floatier .  
 Person2:You ’ re back already ? The water was too cold , huh ? I ’ ll tell you a secret . Do you see that small pool of water over there ? It ’ ll be warmer in there . Go see if you can find some seashells or catch some minnows .  
 Person1:        What is that ? A jellyfish ? Jeremy , put that down right now ! It could sting you !  
 Person2:Ah ! Not on me ! Ow ! 

informal