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:       I ’ m sure you never dare to go against your wife .  
 Person2:Why should I go against her ? She always seems to have better ideas .  
 Person1:        Have you ever got the goods on her for wrong doings ?  
 Person2:Get the goods on her ? She never allows me to go to her office . And she is a good woman . She has been faithful all these years .  
 Person1:        Well , it ’ s nice to have a husband like you . 

formal