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:       Stop running around in front of the TV , will you ? Why don't you just sit and watch ?  
 Person2:I've tried , but I can't stand the bald man talking so loudly in the program .  
 Person1:        Then stay away . No one is keeping you from doing that .  
 Person2:Don't be so irritable . I just don't understand the program , that's all .  
 Person1:        All right , I will explain it to you later on . Now scram .  
 Person2:Ok . I will wait until you have had your fun , if that's what you want .  
 Person1:        That's exactly what I want , thank you . 

informal