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:       Would you mind taking your feet off the table , Mike ?  
 Person2:Not at all . But I've found satisfaction in it !  
 Person1:        Do you put your feet on your own table ?  
 Person2:No , I never do that .  
 Person1:        Why not ?  
 Person2:I don't want to mark my table , of course .  
 Person1:        Well , will you please put them down ?  
 Person2:I'm sorry . I thought you wouldn't come back so early .  
 Person1:        I forgot something on the table .  
 Person2:Oh , you've got a good memory . 

formal