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'.

Person1: Excuse me , I'm a little lost . Which bus do I take to get to Shi Da ?
Person2:Let's see . From here , you have to take the 278bus .
Person1: Oh ok , where do I get off ?
Person2:You should get off at the first Shi Da stop .
Person1: Ok , thanks ...
Person2:You're new at this , huh ?
Person1: No , is it difficult ?
Person2:No , it's quite simple . When you get on , just ask the bus driver when to pay the fare and where you want to get off .
Person1: How much does it cost ?
Person2:Only 15 NT per section . Oh look , that is your bus .
Person1: Wow , I can't thank you enough .
Person2:Don't mention it .
informal

Person1: Any plans tonight ?
Person2:Not really , do you ?
Person1: Well , I am wondering if we took a hang-out for a drink or something . You know , I just came back from a really tough interview . I was quite nervous during the interview . I really want to have the job . Right now , I am still a little on the edge . I am not sure if I could convince them during the interview .
Person2:Take it easy . It is all over now . How was it going , anyway ?
Person1: I don ' t know . I think I did well in the paper exams . I was prepared to answer a lot of questions , but they didn ' t ask those as I expected . To my surprise , the manager tried to talk about the Chinese poesy with me .
Person2:That ' s strange . But probably , it is the new interview technique they call it " Getting to know you more personally " . What about your answers ?
Person1: Just did my best .
informal

Person1: How are you going all these days ?
Person2:Fine , thanks .
Person1: But you look depressed .
Person2:I have some problem with my work .
Person1: Is it serious ?
Person2:I can solve it , thanks .
Person1: How about your family ?
Person2:Everything is Okay . And as soon as I see my son at home , all my worries vanish into the blue .
informal