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:       What have you been up to , Johnny ?  
 Person2:You know-sweeping , scrubbing , washing , drying , waxing , polishing ...  
 Person1:        Wow , your grandma's really having a field day with you , huh ?  
 Person2:You got that right ... and my mom's still mad about what we did with the dishes .  
 Person1:        You have all the fun , don't you ?  
 Person2:Listen , I'd better get back to the grindstone .  
 Person1:        Sure thing , Johnny . Watch out for dishpan hands there , kid ! 

formal