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: Hi , my name is Ted , what ' s yours ?
Person2:What ?
Person1: I said , I ' m Ted , who are you ?
Person2:Huh ? Oh , my name is Laura .
Person1: Do you somewhere often , Laura ?
Person2:Huh ? I can ' t hear you , the music ' s too loud .
Person1: Let ' s go outside and talk . So Laura , do you come here often ?
Person2:Hold on , my ears are still ringing from the music ... what was it you asked me ?
Person1: I asked if you come here often .
Person2:Sometimes , usually once every few weeks . Do you ?
Person1: No , this is my first time here .
Person2:I usually come with a group of friends . We dance a little , have a few drinks , and just have a good time .
Person1: Yeah , that ' s why I ' m here . My friends dragged me here , because they think I spend too much time studying .
Person2:That ' s good . It ' s good to hit the books , but you need to get out once in a while .
Person1: I guess so . But the music is too loud . I don ' t mind getting out and meeting people , but next time I ' ll do it in a park .
A:
formal