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:       What are you doing now , Steven ?  
 Person2:I am reading a book about money management .  
 Person1:        Oh , my God . Do you want to be a millionaire ? I can see you are very crazy about money .  
 Person2:Everyone wants to earn a lot of money . Don't you think so ? What's more , I am interested in money management .  
 Person1:        No , you are wrong . Money can't buy happiness and health . I won't sacrifice my health in order to get money . In other words , I don't want to be a millionaire and I want to have more free time to enjoy life .  
 Person2:Oh , I see . But a proverb says " Money makes the mare go . " I think it will be better if you have more money .  
 Person1:        Maybe you are right . Please take care of yourself when you make money . Anyway health is the most important thing .  
 Person2:Thank you for your caring . I will .  
 Person1:        No thanks . 

informal