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'.

[Q]: Person1: What's your favorite hobby ?
Person2:I'd like reading books best .
Person1: What kinds of books do you like to read ?
Person2:Literature and economy .
Person1: By the way , would you like to see movies ?
Person2:That's OK .
Person1: What do you do in your spare time ?
Person2:I like to play golf , play badminton or crack jokes .
Person1: I just like to sleep like a lazy cat .
Person2:That's a bad habit .
[A]: formal

[Q]: Person1: How do you like your work ?
Person2:The work is rather hard , but it's interesting .
Person1: What do you do ?
Person2:I work in a publishing house . How about you ?
Person1: Mine isn't hard , but it's not interesting .
Person2:What do you do then ?
Person1: I'm a clerk in a shop .
[A]: formal

[Q]: Person1: Let's go to the cinema by bus .
Person2:Better take the subway . It's far quicker and more convenient .
Person1: OK , it will be a new experience for me .
Person2:We have a rather comprehensive subway system here . You can get almost anywhere rather quickly on a subway , especially at this time of day when the traffic is heavy .
Person1: Where do we pay the fare ?
Person2:Just give the man sitting there three yuan and he'll give you a ticket .
Person1: Do I have to pay an additional fare to change trains ?
Person2:No , you don't have to . Here comes the train . Be careful ! Subway doors open and close automatically .
[A]:
formal