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:       You must be annoyed about your boyfriend ’ s leaving you , huh ?  
 Person2:Don ’ t ever mention him . I ’ m getting over it .  
 Person1:        It ’ s a sad thing . I ’ m ever so sorry ...  
 Person2:Are you done ? 

informal