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:       Dad , I'm scared . 
 Person2:Take it easy , honey . It's just raining cats and dogs . 
 Person1:        But , dad , it's stormy outside . 
 Person2:Honey , it's just windy and raining outside . 
 Person1:        Ar ! Dad , the power went out . 

informal