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:       Mon and I got in another fight , Boris .  
 Person2:oh , Iris ! what was it about this time ?  
 Person1:        it was over food . I simply wanted some fried chicken but she said no .  
 Person2:I believe she was right . You must know that fried foods contain a lot of fat .  
 Person1:        oh , she keeps saying that . She never allows me to have them .  
 Person2:I think you'd better take her advice since health is the greatest wealth .  
 Person1:        But , Boris , i am not a baby any more .  
 Person2:well , that's true .  
 Person1:        how about your mother ?  
 Person2:she also believes in healthy diet . And she requires us to have regular meals .  
 Person1:        poor you . It seems we are in the same boat .  
 Person2:Oh , i am grateful for my mother on this point . her idea of healthy eating helps me a lot keeping fit .  
 Person1:        really ? so you don't have fried food at all .  
 Person2:not really . I may have some occasionally for a chance . But I don't indulge myself too much .  
 Person1:        how do you manage it ?  
 Person2:it's pretty simple , Iris . Just keep it in mind that you're what you eat . 

informal