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 thinking about redecorating my bedroom . I bought this magazine in order to get some ideas . What do you think of this ? 
 Person2:That looks good . The room in the picture is bigger than your bedroom , so you wouldn ’ t be able to have all that furniture in your room . 
 Person1:        I ’ d like to have the bed and the wardrobe . 
 Person2:You would fit both of them in your bedroom . Perhaps you could also get the dressing table . I think that one would look good in your bedroom . 
 Person1:        Yes , it would . It ’ s very expensive though . 
 Person2:Everything in this magazine seems expensive . You could probably find something similar in a discount store . 
 Person1:        Yes . I ’ m sure I could find something similar at one . I ’ d also like to get a new carpet for my bedroom . 
 Person2:You can get cheap carpets easily . Another idea is to buy a rug . That would cover a lot of the carpet and you wouldn ’ t have to replace the carpet . It would save you a lot of work . 
 Person1:        That ’ s a good idea . I ’ m really looking forward to redoing my bedroom . 

informal