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:       Hi , Ellen . That outfit looks terrific !  
 Person2:Thanks , Jim . I didn ’ t think guys paid attention to stuff like that .  
 Person1:        No , we just don ’ t usually admit it !  
 Person2:Well , thanks for the compliment anyway ! 

informal