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:       Is Jack still staying idle everyday ?  
 Person2:No , he has mended his way . After his father died , he set his hand to the job of putting his business affairs in order .  
 Person1:        Really ? He is so competent now .  
 Person2:You can ’ t imagine what he is like now . 

informal