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:       Look ! It ’ s the start of the Olympic Games .  
 Person2:So what ?  
 Person1:        You want to watch , don ’ t you ?  
 Person2:Not really . I couldn ’ t careless about the Olympic Games .  
 Person1:        Please yourself . 

formal