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: 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 solution: 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

Problem: Person1: Would you talk to me about taking one of Dr . Miller's classes ?
Person2:Yes . Have you ever been in one of his classes ?
Person1: I'm thinking about taking his class next semester .
Person2:He was a very easy teacher . Are you thinking of taking a class with him ?
Person1: I'm not sure because I really need to learn something , but I also worry about grades .
Person2:Grades are important , but don't you think that gaining the knowledge is important , too ?
Person1: I really need to learn this stuff .
Person2:He made everything so interesting that the time just flew by . Do you know what I mean ?
Person1: Yes , that sounds right for me .
Person2:Did you know that he came here last year after 10 years in the military ?
Person1: Yeah , I already knew that . That could be a good thing .
Person2:I think you know that you have to make the best decision for you . Enjoy your year !
Solution: informal