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'.
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Question: 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 .

Answer: formal

Question: Person1: Is that true ?
Person2:I guess so . Now Anna's got four kids and another on the way .
Person1: Wow . She looks good for having had that many kids . She's pregnant and wearing Prada !
Person2:That's Anna for you . She keeps up the image of the stylish Italian woman . Here she comes .
Person1: She's glowing . It must be the pregnancy .
Person2:Yeah , or the expensive Italian facial treatments .

Answer: formal

Question: Person1: Hi ! It's still seven o'clock . Are you crazy ?
Person2:I got the information that there is a killer sale at the shopping mall near our block . Get up and I will wait for you at the gate of our flat .
Person1: Every time when you glimpse some stylish clothes , you change into another person .
Person2:Stop complaining , OK ?
Person1: No wonder you are named shopaholic .
Person2:No , I am not a shopaholic , but a super shopaholic . And I really enjoy smelling the gorgeous clothes and new bags .
Person1: Wait a moment . And you can check where other sales are .

Answer:
formal