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: Mom , can you talk about the philosophy of life with me ?
Person2:You got me on that one .

A: formal
****
Q: Person1: Excuse me . would you lend me some wreckers
Person2:Until when ?
Person1: Until Monday or Tuesday next week .
Person2:No problem .

A: informal
****
Q: Person1: What are you doing this Saturday ?
Person2:Not much .
Person1: Do you want to go see a movie ?
Person2:That sounds good .
Person1: What's playing at the Century Fox ?
Person2:Candlelight in the Window
Person1: Should we go see it ?
Person2:I'd rather not . I don't like horror movies .
Person1: How about ' Run of the Mill ? '
Person2:No . I heard that's really boring .
Person1: Why don't we go to a concert instead ?
Person2:Great idea !

A:
informal
****