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 , Mel , would you like to come and have a cup of coffee this afternoon ? 
 Person2:I ’ d love to , but you know I ’ Ve got another appointment . I ’ m really sorry . 
 Person1:        I see . Then what about tomorrow , at Starbucks ? 
 Person2:I ’ m afraid not , George . You gotta know something , I ’ m not available any more . but I know Becky has a crush on ya . 
 Person1:        Are you kidding me ? Becky ? She ’ s a real bitch . 

informal