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:       Peter , have you finished your English composition ?  
 Person2:No . But I ’ m working on it .  
 Person1:        Class starts in twenty minutes . You have to turn it in at the beginning of class today .  
 Person2:I know . I know !  
 Person1:        Do you think you can finish it on time ?  
 Person2:Don ’ t worry . I ’ ll get it done very soon . I ’ m almost finished .  
 Person1:        You ’ d better hurry !  
 Person2:Well , it would be a lot easier to finish if you stopped talking to me .  
 Person1:        Sorry ! 

informal