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:       Gross ! What are you doing to yourself ?  
 Person2:Chill ! I'm just curling my eyelashes .  
 Person1:        It looks like some kind of primitive form of torture .  
 Person2:You're such a wimp ! You're afraid of an eyelash curler .  
 Person1:        Well , you might pinch your eyelid ! Or lose an eyeball !  
 Person2:It just makes my eyelashes curl upwards .  
 Person1:        What for ? 

informal