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: Excuse me , sir ? I just need a little bit more information . Could you tell me your telephone number and mailing address ?
Person2:Sure . My number is 545-8897 , and I live at 908 Mulbury Street .
Person1: That ' s 545-8897 and your mailing address is 908 Mulbury Street . The zip code is 20310 , right ?
Person2:That ' s right .

SOLUTION: formal

PROBLEM: Person1: It was great meeting you .
Person2:Me too .
Person1: Maybe we can meet again sometime ?
Person2:Of course , but I'll have to go now .

SOLUTION: informal

PROBLEM: Person1: Mary , it was wrong of you to be so late . Mother ' s very worried .
Person2:I ' m so sorry I ' m late . But Henry ' s car broke down .
Person1: I don ' t really like Henry . I like my Rose .
Person2:I don ' t like your Rose . And I do love Henry . And I ' m going to marry him .
Person1: But my Rose is great .
Person2:Your Rose is a fool .
Person1: Really , Mary , you ' re horrible .
Person2:Why don ' t you marry Rose , then ?

SOLUTION:
informal