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: Hey , let's arm wrestle !
Person2:Not now .
Person1: Chicken ! You're afraid I'll beat you .
Person2:Are you kidding ? I just feel tired right now .

SOLUTION: informal

PROBLEM: Person1: Do you think the weather will be good this weekend ?
Person2:I heard it might rain .
Person1: Oh . That ' s a pity . I thought that we might go hiking in the hills .
Person2:Mmm ... Well we could go to that new art gallery instead .
Person1: Yes that might be a better idea .
Person2:Maybe we ' ll meet some of the artists too .
Person1: Ok - let ' s do that then !

SOLUTION: informal

PROBLEM: Person1: In my country , we go to school from 8 o'clock in the morning until five in the afternoon .
Person2:Five days a week , too ?
Person1: Actually , five and a half . On Saturday , we have classes only in the morning .
Person2:Gosh !
Person1: That's too much for us really .
Person2:Where are you going now ?
Person1: I'm going to try to find out where the school is located .
Person2:When do you start school ?
Person1: I'm going to register right now .
Person2:That's good .

SOLUTION:
informal