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 can look anybody in the face because I ’ Ve done nothing to make me feel guilty or something . 
 Person2:There are not so many people like you . 
 Person1:        You are flattering me . 

informal