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: Welcome , sir , what can I do for you ?
Person2:I want to buy some records .
Person1: Whose record do you want ?
Person2:Are there the records of Michael Jackson ?
Person1: His records have been sold out . The new copies will be available next week .
Person2:Oh . it's too late . Maybe I should go to other video stores to have a look .
formal

Person1: I'd like to talk with you again about what happened .
Person2:Oh , come on . Let's not beat a dead horse .
informal

Person1: I don't know how John can put up with his son , who fools around without working .
Person2:He's out of John's hands . Nothing he can do about such a black sheep .
Person1: If I were him , I would give him a good talking-to . I would insist on his stopping fooling around like that .
informal