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:       Why don't we get you some shirts ?  
 Person2:I want to leave . We've already been here two hours .  
 Person1:        But we should get you some shirts while we're here . You need summer shirts .  
 Person2:I would rather buy them somewhere else .  
 Person1:        Why ? They have everything here .  
 Person2:I don't like shopping in malls . I like shopping on the street . There is more variety .  
 Person1:        Let's just look and see what they have .  
 Person2:Alright .  
 Person1:        What about these shirts ? Do you see anything you like ?  
 Person2:The styles here are too boring for me . I told you . I like street shopping .  
 Person1:        Oh , come on ! Don't be so sour . These are beautiful shirts . I know if we don't buy some today , you will never go shopping by yourself .  
 Person2:Sure I would .  
 Person1:        Here . Look at this shirt . Try it on .  
 Person2:Do they have it in LARGE .  
 Person1:        I don't know . Let me look on the rack . Here is one . LARGE . Try it on .  
 Person2:Where is the fitting room ? I don't see it .  
 Person1:        The fitting rooms are over there .  
 Person2:Okay , I will try it on .  
 Person1:        It looks good on you .  
 Person2:I look like a nerd .  
 Person1:        No , it looks great.Why are you always like this when you're shopping ? You know it looks good .  
 Person2:Well , I don't think it's the best style for me .  
 Person1:        I think we'll buy this one . And I want you to try on this one too .  
 Person2:Alright . Alright .  
 Person1:        You should be happy I want you to look good.If I let you shop for yourself , you would never buy anything .  
 Person2:Yes , maybe . But I like street shopping . There is more variety . I'm sorry . I just don't like malls . 

informal