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:       Don't have some relation with him . You know , he is not a kind man .  
 Person2:Yeah . Sometimes I just cannot accept his behavior .  
 Person1:        If you attack him , be sure you ’ ll get a Roland for an Oliver .  
 Person2:OK , it ’ s better to be far away from him . 

informal