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: Hurry up , get in .
Person2:I ' m in , let ' s go !
Person1: OK , make a left here . . . no wait , I meant make a right . Come on , speed up !
Person2:Geez ! What ' s the rush ?
Person1: Don ' t worry about it , just drive . Oh , no , the light is about to change . . . step on it !
Person2:Are you nuts ! I ' m not going to run a red light !
Person1: Whatever . Just turn right here . . . . The freeway will be packed at this hour . . . . let ' s take a side street.Go on ! Get out of our way ! Move , move !
Person2:What ' s your problem ! Geez . Having a fit is not going to help !
Person1: Here , I know a short cut ... just go down here , and we ' ll cut though Ashburn Heights . Let ' s go , let ' s go ! Watch out for that lady !
Person2:I ' m going as fast as I can !
Person1: Yes ! We made it . 5:58 , just before the library closes .
Person2:You ' re such a geek !
A:
formal