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'.

Person1: How did you get around over there ? Did you rent cars ?
Person2:No , that would be too expensive . We used the train system.We bought a special pass called a Enrail pass . It lets people use the train wherever they want , as often as they want .
Person1: I've heard about Enrail passes.So those Europeans really depend on trains a lot .
Person2:Yes , they do . I wish we Americans had a better train system .
Person1: I know . Our train system is lousy.And besides , Americans love their cars too much .
Person2:I agree . And probably the automobile companies are too powerful.They never allowed the government to develop trains .
Person1: It's too bad for the environment . So much pollution from cars .
Person2:Americans love cars for different reasons , I think.One reason is that we are very individualistic.And cars are a very individual way of getting around.Americans like the freedom of driving around by themselves.They don't want to ride in a train or bus with a group of people .
Person1: Yes , I agree . I think it is a cultural characteristic.It would be very hard to get us Americans to change this.But you know what ? Probably , in the future , Americans will have to change .
Person2:Why do you say " have to " ?
Person1: Because the earth's environment can't tolerate cars forever . I think cars are already causing global warming.When the problem gets more serious , world governments will have to start limiting car use .
Person2:Maybe you're right . They will have to develop alternative transportation.But it will be hard in America . Too many people are used to cars.Even in our movies cars are very important .
Person1: Wow ! I didn't notice the time.It ' s almost noon . I have to get home .
Person2:Do you want me to give you a ride ?
Person1: No , no problem . I have my car in the parking ramp around the corner .
Person2:Alright.Well , I'll stay here and have another coffee . Nice running into you .
Person1: See you around .
formal

Person1: My god , it's such a lovely lake ! The lake has a water surface of 56 square kilometers .
Person2:No wonder it looks so huge .
Person1: We are now walking on what is in fact an island . Here we get one of the 10 sceneries of the West Lake , Autumn Moon over the Calm Lake .
Person2:Why is it called Autumn Moon over the Calm Lake ?
Person1: It's so named because in the pavilion over there the great poet Bai Buyi of the Tang Dynasty would take a rest after drinking a little too much , and watch the moon over the lake .
Person2:Very romantic .
Person1: Now let's board the boat and have a ride on the lake .
Person2:Sure ( They get on the boat ) .
Person1: Wang , what's that building over there ? It looks like some sort of a huge pavilion .
Person2:You are right . That's the Heart of Lake Pavilion , situated on an islet.It was built in 1552 and is the largest pavilion on the West Lake . Oh , here we are at the Little Yingzhou island . Let's get off the boat . Please watch your steps .
informal

Person1: So , what ' s new in the kitchen ? That refrigerator is new , isn ' t it ?
Person2:Yes . I needed a large one . Before , I had a separate refrigerator and freezer , but this has both combined into one .
Person1: That ' s usual nowadays . You ' Ve added a few shelves too .
Person2:Yes . You know I ' Ve been cooking more kind of food recently and I needed some extra space for spices and ingredients .
Person1: Did you buy new cupboards too ?
Person2:No , I didn ' t . I gave them a really good clean , so they just look new . The worktop was in poor condition , so I had a new one added .
Person1: I see that you have bought several new pots and pans and utensils .
Person2:Yes , I have . I need them to help me with these new dished I ' m trying to make . I need a little more practice before I invite guests over .
Person1: Looking at the spice rack , I ' d say you ' Ve been learning how to make asian food .
Person2:Yes . I ' Ve always likes Indian and thai food , so I ' Ve been trying to make dishes from those countries . I ' m pretty good at making curries now , but I still need practice at making thai food .
Person1: Both kinds of food are becoming popular.Nowadays , it ' s very easy to pick up the ingredients at the supermarket .
Person2:I hope you can stay for dinner . I need a guinea pig !
formal