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'm really curious . What is it like doing housework all day for a living ?  
 Person2:It's a little like being a mom , only I get paid for it !  
 Person1:        I still think that it is a bitstrange that you like to do that kind of thing . Most women would rather hire a maid .  
 Person2:That's exactly why my business is doing so well !  
 Person1:        How Ay clients do you have already ?  
 Person2:Well , I've been in business for one month now and I have ten clients .  
 Person1:        Wow . Too bad I don't have a clue about housework .  
 Person2:If you ever need a job , let me know . I can always train you . 

informal