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:       Have you heard that Tom and his wife divorced ?  
 Person2:I didn't hear that . But I can deduce the reason .  
 Person1:        Really ? Say it !  
 Person2:Tom is a kind guy , but addicted to gambling . He spends all his time gambling in the casino . And his wife can't put up with his incessant gambling any longer , so she divorced him . Is that right ?  
 Person1:        Yeah , quite right . Gambling broke up a happy family .  
 Person2:Yeah ! Gambling is often a curse . By gambling we lose time and treasure , two things most precious to a man .  
 Person1:        Besides that , many people took to gambling and got in over their heads , and gradually ruined themselves .  
 Person2:In a word , gambling is a vice . We should be away from it . 

informal