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:       Who's that tall guy over there ? 
 Person2:Oh , that's George . He looks very drunk . 
 Person1:        What's he like normally ? 
 Person2:Oh , he's really reserved , normally . But , from what I hear , he's got lots of problems . 
 Person1:        Really ? What kind of problems ? 
 Person2:Well , off the record , of course , but I hear that he's got terrible debts . He has his own company , and it's not going very well . 
 Person1:        Really ? Well , I hate to say this , but I'm not surprised . 
 Person2:Really ? What makes you say that ? 
 Person1:        Well , he doesn't look very honest . 
 Person2:I know , that's the problem . He can't find any customers . It's a pity , really , because his products are very good . Oh , that reminds me . Did I tell you about my new laptop ? 
 Person1:        Oh , don't talk to me about laptops . Mine crashed on Friday and I lost everything . I hate them . 
 Person2:Oh , really ? 
 Person1:        Look , I need another drink . Do you want one ? 
 Person2:Yes , I'll have another cocktail . 
 Person1:        Vodka martini ? 
 Person2:Absolutely . 
 Person1:        I'll be back in a sec . 
 Person2:OK . I'll wait here for you . 

informal