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:       Does your wife work ?  
 Person2:Yes , she does . She works at home .  
 Person1:        Oh , I understand . She cooks , cleans and takes care of children . Is that right ?  
 Person2:Oh , no . Most of the time I do these things . She is a writer .  
 Person1:        You are really a hen-pecked husband . 

formal