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'.

Let me give you an example: Person1: Hey man , you wanna buy some weed ?
Person2:Some what ?
Person 1:Weed ! You know ? Pot , Ganja , Mary Jane some chronic !
Person2: Oh , umm , no thanks .
Person1: I also have blow if you prefer to do a few lines .
Person2: No , I am ok , really .
Person1: Come on man ! I even got dope and acid ! Try some !
Person2: Do you really have all of these drugs ? Where do you get them from ?
Person1: I got my connections ! Just tell me what you want and I ' ll even give you one ounce for free .
Person2: Sounds good ! Let ' s see , I want .
Person1: Yeah ?
Person2:I want you to put your hands behind your head ! You are under arrest !
The answer to this example can be: informal
Here is why: Based on the conversation, we can see that there is a presence of exclamation which is not present in a formal discussion. Therefore this is an informal conversation

OK. solve this:
Person1: How do you like the food sold in this sidewalk snack booth ?
Person2:At least , it is better than my boxed lunch at work . I'm so fed up with the bland food . Thank you for having lunch with me !
Person1: Any time . But I don't mind eating boxed lunch . The food sanitation is really good too .
Person2:It's hard to believe that you like it . You are so easy to be satisfied .
Person1: Hey , it's not that bad . The food is nutritious and it's really convenient . I don't want to spend too much time on eating stuff .
Person2:Eating is important . You are what you eat . It's not only a daily routine .
Person1: Well , will you just go back to work after lunch ?
Person2:No . I'm going to pay the bill for the company's lunch .
Person1: But you didn't eat anything today .
Person2:Well , the bill is paid by month . That's probably the only thing that I like about a take-out restaurant .
Person1: All right . I'm going to the McDonald's .
Person2:For what ? I thought you didn't like western food .
Person1: No , I never did . It's for my son . He loves it , and I made an agreement with him that he can eat it once a week .
Person2:That's really smart . My son Daniel is the same with your son . I just don't get it , why all the kids prefer western food to traditional food .
Person1: Me , either . But , it's for sure that the children market is a really big one .
Person2:That's for sure . It's always hard for the parents to say no to their children .
Answer:
formal