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:       Hey , Joshua ! Is Anny coming with us ?  
 Person2:Yes , why ?  
 Person1:        Nothing . I'm just asking .  
 Person2:Just asking ? But why is your face burning like mad ? Aha , someone has a crush on Anny , doesn't he ?  
 Person1:        Who has a crush ?  
 Person2:Come on , Josh , don't be such a chicken . If you like her , you've got to tell her . Maybe she likes you .  
 Person1:        I'd totally die if she turned me down .  
 Person2:You've got to let her know . Come on ! You've got to take a chance ! 

informal