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:       what a nice uniform !  
 Person2:thanks ; do you like it ?  
 Person1:        not really . I was being sarcastic . Does it come with the job ?  
 Person2:yes , everyone on the sales floor has to wear one . They're supposed to make us look more professional .  
 Person1:        they're not actually that bad . They could be worse . What do you think about it ?  
 Person2:I don't mind it , actually . I don't have to worry about what I'm going to wear every day .  
 Person1:        so are you enjoying your new job ?  
 Person2:it's much better than my old one . My new boss is great .  
 Person1:        how do you like working in sales ?  
 Person2:I like the fact that I get to work with people . It makes the day go by much faster .  
 Person1:        that's good . Have you met Jane yet ? She's the intern in the international travel department .  
 Person2:yeah , I've met her . She's a genius saleswoman !  
 Person1:        I know ! She could sell fridges to Eskimos !  
 Person2:how do you know her ?  
 Person1:        she's my cousin .  
 Person2:why didn't you tell me about that before ?  
 Person1:        I don't know . I didn't think it was that interesting .  
 Person2:well , now that I know that , maybe we should all go out for dinner sometime .  
 Person1:        that's a good idea . Let's discuss after work . 

informal