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:       Are you looking for an apartment ?  
 Person2:Yes , I am interested in finding a one-bedroom apartment near Washington Square .  
 Person1:        I think I have just a right apartment for you .  
 Person2:Oh , good . Can you describe it ?  
 Person1:        Yes . It has one bedroom , a large living space and 4 kitchens .  
 Person2:So is there a refrigerator ?  
 Person1:        Yes , it ’ s brand-new .  
 Person2:It sounds great . How much is the rent ?  
 Person1:        It ’ s $ 8.50 a month .  
 Person2:When can I see it ?  
 Person1:        We can take a see by there now if you like . The landlord left me a set of keys with me .  
 Person2:Ok , that would be great . 

informal