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:       Do you know that Jack got divorced last month .  
 Person2:For what reason .  
 Person1:        Jack always lives by his wits and he cannot support his family .  
 Person2:He had better make a change . 

formal