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'.

Ex 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 .

Ex Output:
formal

Ex Input:
Person1: Bob , you're so lucky that you've come at the right time-the 2005 International Tourism Festival is around the corner .
Person2:We've heard about that festival before . It would be quite helpful if you could give us some highlights of the festival .
Person1: My pleasure . Well , the festival is going to start on the third Saturday of October , and covers over one hundred diverse programs in one month .
Person2:What do you think we can see during the festival ?
Person1: I don't know what to suggest . There're so many attractions , and they all sound interesting . One exciting program might be the Ten Thousand People Cycling round the Town . You can choose from the five routes that lead to different destinations .
Person2:I'd like to take the one that goes to the Wild Animal Park .
Person1: Then you can take Route No . 5 . Next I would suggest the International Dragon Boat Race where you can watch Lion Dance , Dragon Boat racing , and many other water shows .
Person2:Wow , must be interesting to watch dragon boats compete a-gainst one another on the city river .

Ex Output:
formal

Ex Input:
Person1: how's it going ?
Person2:I'm in a good mood today , actually . How about you ?
Person1: to be honest , I'm a bit fed up .
Person2:what's wrong ?
Person1: there's a girl in my company that I really like but I always get shy when she is around .
Person2:I see ! Do you want to ask her out ?
Person1: sure , but how ?
Person2:you can ask her out for drink after work .
Person1: but for what reasons ? She doesn't even know who I am .
Person2:then you've got a lot of homework to do . You need to get her notice first .
Person1: easier said than done .
Person2:you can start by meeting her at the bus stop and saying hello to her .
Person1: but I always get tongue-tied when I see her .
Person2:that's something you need to overcome . Men should make the first move as most of girls prefer being chased .
Person1: I see . I'll try .
Person2:good luck !

Ex Output:
formal