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:       Hello there ! Come on in ! Don ’ t just stand there ! Come and take a seat !  
 Person2:Um , okay . Well , I just want a trim . Nothing too fancy .  
 Person1:        Oh my gosh ! Your hair is amazing ! So silky , so shiny ! I am going to work my magic on your hair ! You hear me ? You are going to look like a million bucks !  
 Person2:Okay . Um ... can you make sure my sideburns are even and you just take a little off the top .  
 Person1:        Don ’ t you worry , I ’ ll take care of everything ! Oh my god ! I just love your curly hair ! It ’ s so fluffy and cute ! You should totally let it grow out . An afro would look great on you !  
 Person2:Um ... no .  
 Person1:        Okay , but you are going to be my masterpiece ! 

informal