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:       The company is selecting three employees to attend the marketing seminar next month . Did you put your name in for it ?  
 Person2:No , I don't really care too much for seminars ... I find them to be either boring ot useless . I mean , how much can you really learn in one afternoon ?  
 Person1:        It's not just about the things that you learn , you know ... seminars are a really great opportunity to mingle and network with professionals in our industry from all over the nation . You can learn a few things , but more importantly , you rub shoulders with the business leaders and make contacts that could lead to potential sales or partnerships in the future . The social mixers are always more important than the seminars anyway .  
 Person2:I'm still not too jazzed about going ... I feel kind of awkward in those cocktail party situations .  
 Person1:        Well , what if I told you the seminar is going to be held in Hawaii ? Does that perk your interest ?  
 Person2:Now you're talking . 

formal