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'.

[EX Q]: Person1: I can ' t believe the cost of apartments in New York City .
Person2:Oh , you didn ' t know that apartments here are considered valuable , even if they are small and crowded ?
Person1: Of course I had heard about that , but now I know how expensive it is to rent a place here .
Person2:I don ' t mind paying high rent to live in New York .
Person1: Why ? You pay so much for such a tiny space to live .
Person2:Yeah , but so what ! I ' m proud to live in the world ' s most exciting city . And , the salaries here are the highest in the nation , too .
[EX A]: informal

[EX Q]: Person1: I can't believe Mr . Fro didn't buy it . Who does that guy think he is anyway ? Bill Gates ?
Person2:He had a lot of nerve telling us our ads sucked .
Person1: Time to order . Balista , today I want a skinny triple latte .
Person2:When did you start worrying about your weight ?
Person1: I'm not . I just don't feel like drinking whole milk today . Why ? Do you think I'm fat ?
Person2:No , Jess , chill out !
[EX A]: formal

[EX Q]: Person1: Are you interested in history ?
Person2:Yes , I am . I enjoyed studying it at school , though I had trouble remembering all the dates , so my teacher never gave me good marks .
Person1: I love history , but I ' Ve always thought that learning the reasons behind events is more important than remembering exactly when they happened .
Person2:I wish you had been my history teacher ! I might have got better marks !
Person1: Some people say that history repeats itself .
Person2:What does that mean ? The same events never happen twice , do they ?
Person1: The idea is that the people and dates change , but the reason why things happen stay the same .
Person2:I see . I think I ' d agree with that statement . People often seem to make the same mistakes over and over again .
[EX A]:
formal