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:       He is penny wise and pound-foolish .  
 Person2:Why do you say so ?  
 Person1:        The trash of the world he sets high price upon , but the heavenly things he shamefully undervalues .  
 Person2:Maybe all of us are the same . 

formal