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:       My goodness ! You ’ re kidding !  
 Person2:No . I ’ m serious . I ’ m going to quit my job .  
 Person1:        That ’ s amazing ! You got a good pay here , didn ’ t you ?  
 Person2:It ’ s true . But I can ’ t show my abilities .  
 Person1:        Come on ! Don ’ t be silly !  
 Person2:Your present job is something better . Why do you change ?  
 Person1:        Well . How do you know ? 

informal