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 Input:
Person1: Good day ! What can we do for you ?
Person2:I'm considering buying a new car , the old one hasn't been running too well recently , and was wondering what kind of credit you can offer me .
Person1: Buying a new car is a big expense ; we understand that , so we have a variety of loans to suit your needs .
Person2:That's great . I'm looking to borrow quite a large sum , though .
Person1: With our Personal Automobile Consumer Loan , the borrower can borrow up to 80 % of the purchase price .
Person2:That's good news . The car I'm interested in is priced at 120,000 RIB , but I think I can get a bit of discount on that . I can afford to put up around 40,000 RIB myself .
Person1: That's great . You will need to make an initial down payment of 20 % , and then we can get going with this .
Person2:The funds are all ready to go in my personal account , so let's transfer it .

Ex Output:
informal

Ex Input:
Person1: It ' s dangerous . I don ' t dare to go .
Person2:Come on . It ' s quite safe . You really have no guts .

Ex Output:
informal

Ex Input:
Person1: David , what's new with you ? You are not in the mood . Can you tell me ?
Person2:After six months , my college life will come to the end . The following trouble will be the job-hunting . That's really a headache .
Person1: Do not take things so seriously , my pal ! Every one of us will face the trouble and job-hunting is inevitable . Take it easy ! Believe in yourself and some day you will be successful .
Person2:It sounds reasonable . Maybe I should look on the bright side .

Ex Output:
informal