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:       Wake up , Erik , time to rise and shine . 
 Person2:Huh , oh , hi , Jane . I must have fallen asleep while I was reading . 
 Person1:        You and everyone else . It looks more like a camp-ground than a library . 
 Person2:Well , the dorm ’ s too noisy to study in , and I guess this place is too quiet . 
 Person1:        Have you had any luck finding a topic for your paper ? 
 Person2:No . Prof . Grant told us to write about anything in cultural anthropology . For once I wish she hadn ’ t given us so much of a choice . 
 Person1:        Well , why not write about the ancient civilizations of Mexico . You seem to be interested in that part of the world . 
 Person2:I am , but there is too much material to cover . I ’ ll be writing forever , and Grant only wants five to seven pages . 
 Person1:        So they limit it to one region of Mexico . Say the Yucatan . You ’ Ve been there and you said it ’ s got lots of interesting relics . 
 Person2:That ’ s not a bad idea . I brought many plenty of books and things back with me last summer . That would be great resource material . Now if I can only remember where I put them . 

informal