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:       She's pretty and meek . 
 Person2:No , I can't agree with you . She's one but not the other . 
 Person1:        What makes you think so ? 
 Person2:She's my wife , you know . 

informal