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:       So , tell me about you new house . How is it different to your old one ?  
 Person2:Well , first of all , it ’ s much bigger . It has the same number of rooms , but each room is larger . We also have a larger garden , which our dog loves , of course !  
 Person1:        So , it ’ s a three-bedrooms detached house ?  
 Person2:Yes . One bedroom is for my wife and I . there ’ s another for our daughter . My wife wants to use the third one as a guest room , but I ’ d like to make it into a study . Our daughter is also keen on making it a study , so that ’ s probably what will happen .  
 Person1:        What ’ s the kitchen like ? I know both you and your wife like to cook .  
 Person2:That ’ s one of the main reason we chose that particular house . The kitchen and dining room are together . It ’ s really large .  
 Person1:        Are the rooms nice and bright ?  
 Person2:Yes , they are . That ’ s very important to us . We like to live in a home with plenty of natural light . Each room has large windows .  
 Person1:        Do you have a balcony ?  
 Person2:No , we don ’ t . We wish we had one . That ’ s the only thing we wanted , but don ’ t have . The area is very nice and the neighbours seem friendly .  
 Person1:        You ’ re right on the edge of the city , aren ’ t you ? There can ’ t be much noise or traffic there . Is it easy to get into city centre ?  
 Person2:It ’ s a very quiet neighbourhood . There ’ s some traffic , but not much . It ’ s not very difficult to get to the city centre , but you must remember to turn left and right at the right places or you ’ ll get lost . So when are you going to drop by ? 

informal