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 , please.Could you tell me how to get to the No . 10 Middle School ?
Person2:Walk down this road , take the fourth turn to the right.Then you'll see it .
Person1: Is it far from here to there ?
Person2:No . It's only about five minutes ' walk .
Person1: Many thanks !
Person2:Not at all .

SOLUTION: informal

PROBLEM: Person1: Hey ! What's up ?
Person2:Hi , John ! I haven't seen you for ages .
Person1: Yeah , I've been out of town .
Person2:So how have you been ?
Person1: Great ! Work is really busy now , but it's fun .

SOLUTION: informal

PROBLEM: Person1: Mm ... How do I get this ticket machine to work ?
Person2:Well first put your money in .
Person1: Ok , I ' Ve done that .
Person2:Then just press this button .
Person1: Oh it ' s printed the ticket already . Thank you very much .
Person2:You ' re welcome .

SOLUTION:
informal