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'.

Input: Consider Input: Person1: Hello everyone ! I ' m Rick Fields , and here with me is Bob Copeland .
Person2:Howdy folks , and welcome to today ' s game ! You know , Rick , today is a key game between Russia and Canada . As you know , the winner will move on to the finals .
Person1: That ' s right , and it looks like we ' re just about ready to start the match . The ref is calling the players for the face-off ... and here we go ! The Russians win possession and immediately set up their attack ! Federal gets checked hard into the boards !
Person2:Maurice Richard has the puck now , and passes it to the center . He shoots ! Wow what a save by the goalie !
Person1: Alright , the puck is back in play now . Pavel Bure is on a breakaway ! He is flying down the ice ! The defenders can ' t keep up ! Slap shot ! He scores .
Person2:What an amazing goal !

Output: informal

Input: Consider Input: Person1: I used to think that Americans had so much money they didn ' t know what to do with it .
Person2:You did ?
Person1: Yes . But now I ' Ve learned differently . Now I have a more realistic opinion .
Person2:What do you think now ?
Person1: There are lots of jobs , and almost everybody works . There is a high standard of living . People earn a lot , but they spend a lot to live . So there isn ' t so much money after all .
Person2:But I still say Americans spend a lot more money on useless things than we Chinese do .
Person1: That ' s true . But Americans work hard for their money like we do . I don ' t know why our spending habits are so different .

Output: formal

Input: Consider Input: Person1: Sir , your hair is done . Anything else I can do for you ?
Person2:I'd like to have a shave .
Person1: All right , sir . Would you lie back so that I can shave you ?
Person2:Sure . But my beard is rough .
Person1: Don't worry , sir . I've never cut a customer . Shall I trim your moustache ?
Person2:Yes , please .
Person1: Now , I've finished . How do you like it ?
Person2:Wonderful . How much is the cost altogether ?
Person1: 20 dollars .
Person2:Here you are . Thank you , bye-bye !
Person1: Bye-bye . Welcome to come next time !
Output: informal