TASK 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'.
PROBLEM: Person1: I don't think much of the film .
Person2:But I think it wasn't too bad .
Person1: Really ? Do you like the story ? It's sheer nonsense !
Person2:It's exaggerated . Actually this sort of thing happens to everyone .

SOLUTION: informal

PROBLEM: Person1: Do you surf online regularly , Joe ?
Person2:Of course . I stay online for four hours at least every day .
Person1: Are you crazy ? What are you doing four hours online ?
Person2:Millions of things . I surf the Net , check my e-mail , and most importantly , I chat with my friends .
Person1: Online chat ? Aren't you afraid of meeting bad people who pretend to be what they are not ?
Person2:No , I am not . And I love to meet new people in the chat rooms who share a lot in common with me .
Person1: It sounds interesting .

SOLUTION: informal

PROBLEM: Person1: Do you like that vintage clock ? It's almost fifty years old .
Person2:Really ? It almost looks brand new . And the color designs are so retro .
Person1: Well , in the fifties , that clock used to be inside a drive-in burger joint .
Person2:No way ! My parents used to hang out at those places .
Person1: This is one of my favorite items .
Person2:How did you get it ?

SOLUTION:
informal