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 need a haircut . 
 Person2:Do you have an appointment ? 
 Person1:        No , I don't . You look pretty busy today . Do you have an opening for me ? 
 Person2:Yes , we do . I can cut your hair right now if you like.Do you need a shampoo too , or just a haircut ? 
 Person1:        Just a haircut . I washed my hair this morning . 
 Person2:Alright . I will have an assistant wet your hair . Then I can cut it.Please step over there.How would you like your hair cut today ? 
 Person1:        Well , I last had a haircut eight weeks ago . So my hair is pretty long.But I want the same style . 
 Person2:I recommend you leave it a little long on top.But we should take in the back and sides a bit more . That's more fashionable now . 
 Person1:        Alright . You are the expert . I'm happy to have your recommendation . 
 Person2:So I will cut the sides just above the ear . Is that good ? 
 Person1:        Fine . 
 Person2:And do you usually part your hair along here ? 
 Person1:        Yes . 
 Person2:Alright , I know just what to do.Your hair seems quite dry , you know . And I see some split ends . 
 Person1:        Yes , I know my hair is quite thin.It runs in my family . Everybody has very thin hair . 
 Person2:The problem is the split ends . They make your hair look even more frizzy . 
 Person1:        I don't know what to do about it . 
 Person2:Well , there are two things you can do.First , don't blow-dry your hair for so long after you shower . Let it dry naturally.That is easier on the hair , so you won't get split ends.Second , buy a g 
 Person1:        Do you sell conditioner here ? 
 Person2:Of course . I have one I can suggest . 
 Person1:        Great . I would be happy to try it . I know my hair doesn't look good now . It's too weak . 
 Person2:The problem is the split ends . 

informal