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:       Mr . : Hello , Mary . 
 Person2:Hi . 
 Person1:        Mr . : I'm Mr . Taylor , and I'm your counselor . I'm going to show you around the school . 
 Person2:OK . 
 Person1:        Mr . : Right here is the cafeteria . 
 Person2:It's huge ! 
 Person1:        Mr . : But not big enough . And here is our computer room . 
 Person2:There must be about 50 computers in here . 
 Person1:        Mr . : And over here is our gymnasium . 
 Person2:Do I have to take gym ? 
 Person1:        Mr . : Just like everyone else . 

informal