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'.
One 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 !
Solution is here: informal
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

Now, solve this: Person1: Hi , Sara , what are you reading ?
Person2:Hi , John , I am trying to find a carpenter .
Person1: Why ?
Person2:Well , I want to build a deck in my back yard .
Person1: What for ?
Person2:So I can have a special place to hang out with friends , and also do some barbecuing on weekends .
Person1: That sounds cool . Do you mind if I recommend myself for the job ?
Person2:You ? Do you have a carpenter's license ?
Person1: Yes , of course . But I only freelance on weekends with my uncle .
Person2:Wow ! That's cool . So , let me give you some details about the deck I want .
Person1: Please go ahead , I am listening .
Person2:I'd like my deck to be at the same level as the back door .
Person1: Is your back door higher than the ground level ?
Person2:Yes , the back door is about four or five steps higher than the ground .
Person1: Okay , then you need a deck with a guardrail .
Person2:I don't like things to be fancy .
Person1: Don't worry . I will build your deck with a simple but classic look .
Person2:Hmm , that's good . Can you use cedar or redwood to build it ?
Person1: Cedar is a good choice .
Person2:Well , let's take the measurements right now .
Solution:
informal