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 love your bracelet . When did you get it ?  
 Person2:I got it a while ago , but I haven't worn it much . You really like it ?  
 Person1:        Yeah . It's beautiful . Is it white gold or silver ?  
 Person2:It's white gold .  
 Person1:        Where did you buy it ?  
 Person2:My boyfriend took me to the Shane Co . and he let me pick it out .  
 Person1:        That's so sweet . What was the occasion ?  
 Person2:That's the best part . It wasn't for anything special . He just wanted to buy me something .  
 Person1:        You're so lucky . If he bought you something for no special day , I wonder what he would buy you for your birthday .  
 Person2:My birthday is coming up . We'll find out pretty soon .  
 Person1:        What do you want ?  
 Person2:I wouldn't mind a necklace . I was at the jewelry shop looking around , and they have a couple of beautiful necklaces I want .  
 Person1:        Why not a ring ?  
 Person2:I don't think I'm ready for a ring from him yet .  
 Person1:        But you're ready for everything else ?  
 Person2:Akha . 

informal