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: Could you explain the paper-making process to us - in very simple terms - please ?
Person2:Well , the pulp falls from a box onto the first part of the paper machine , which is basically a wire bed with large holes in it , where most of the water is extracted .
Person1: So , is it actually paper at this stage ?
Person2:Yes , it is . But we need to take out more water . So it then passes through a series of rollers , where more water is squeezed out . After that it goes through the dryers , which are at a very high temperature . The paper is then coated . And finally it's wound onto reels and cut down into smaller lengths .

SOLUTION: formal

PROBLEM: Person1: I know that you are interested in our washers .
Person2:Yes , we are thinking of placing an order . However we would like to know what kinds of machines are available for export and in addition your sales terms , including mode of payment , discount and possible date of delivery .
Person1: We supply washers of all types and sizes . We have years of experience in the manufacture of washers .
Person2:We have read about this in your sales literature . Could you give us some idea of your prices ?
Person1: Our prices compare favorably with those offered by other manufactures either in Europe or anywhere else . Here are our latest price lists . You will see that our prices are very attractive .
Person2:Do you take special orders ? That is , do you make machines according to the specific requirements from clients ?
Person1: Sure , we do .
Person2:How long does it usually take you to make delivery ?
Person1: As a rule , we deliver all our orders within three months after receipt of relevant L / C . It takes longer , of course , for special orders . In no case would it take longer than six months .
Person2:Good . One more thing , we'd like you to quote us on CIF basis .
Person1: Okay . No problem .

SOLUTION: formal

PROBLEM: Person1: Are you still coming to my place for dinner tomorrow night ?
Person2:Of course . Is the dinner still on ?
Person1: Yes , I was just wondering how you and your roommate were planning on coming to my place .
Person2:We were planning on walking both ways since the weather is still nice .
Person1: That's what I thought you would do . Listen , I live in a bit of a rough neighborhood . It's just down the street from all the bars . You probably don't want to be walking around after dark .
Person2:It can't be that bad .
Person1: I wish it wasn't , but there is actually a lot of crime and prostitution around here .
Person2:Really ? I never would have guessed . The criminals must only come out in the evenings , because I've never noticed anything strange when I've been at your house in the daytime .
Person1: Do me a favor , and take a taxi . It'd make me feel a lot better .
Person2:Ok , we will . How do you get around in the evenings ?
Person1: When I first moved in , I walked everywhere . But within a week , I had my purse stolen just a block away from the police station ! Now , I always take public transportation .
Person2:Has anything else happened to you ?
Person1: Nothing else has happened to me , but I have seen quite a few fights on the streets after the bars close .
Person2:Well , we'll be careful . Thanks for letting me know .

SOLUTION:
informal