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: Hey , Robert , that's a nice shirt you are wearing . Where did you get it ?
Person2:Thanks , I like it too . I bought it at the nearby department store .
Person1: That's nice . Do you know you can get one at the wholesale market near the zoo for a much lower price ?
Person2:Yeah , I know that . But at those places . the prices they ask you are ridiculously high , and if you don't bargain hard , you will get ripped-off .
Person1: True , learning how to haggle the price is one of the things people have to pick up when they come to China for the first time .
Person2:Yeah , but personally I hate bargaining . If I bargain , I might come to a lower price . But I will never know the true price of what I am buying , and I'll always have the feeling that I am over charged at those places .
Person1: Yeah , I have the same feeling . Also there is another thing that bothers me the quality . Things in a department store are usually quality-guaranteed . But at a wholesale market , you never know whether what you are buying are of good quality or not .
Person2:That's why I like department stores more . Shopping at a wholesale market like the locals is one of the few things I am unable to grow accustomed to .
Person1: I understand . While it's always good to follow the local customs , I guess there are exceptions .
Solution: informal