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'.

Example input: 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 !
Example output: informal
Example explanation: 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
Q: Person1: Let ' s got out tomorrow night . We can go to a bar and try to find you a girlfriend .
Person2:I don ' t think that ' s a good idea . I am just not good with approaching someone and starting up a conversation .
Person1: Maybe you just need a few pick-up lines , you know , break the ice .
Person2:Pick-up lines don ' t work !
Person1: Come on ! You can just walk up to a girl and say " If you were a booger I \ ' d pick you first . "
Person2:What ? Come on ! That ' s just lame ! No girl would fall for that !
Person1: Fine , then you can say , " So there you are ! I ' Ve been looking all over for YOU , the woman of my dreams ! "
Person2:That ' s a good one ! I think that ' s pretty funny .
Person1: Yeah , so you make her laugh , you make a fool of yourself a little bit and then you buy her a drink .
Person2:Ok , how does this sound , " I was so enchanted by your beauty that I ran into that wall over there . So I am going to need your name and number for insurance purposes . "
Person1: Nice ! Let ' s go !
A:
informal