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: Do you like a package tour or to travel alone ?
Person2:I prefer a package tour , and we don't have to worry about accommodation , meals or that sort of trivial demanding things .
Person1: I prefer travel alone . I'll have a lot of time lingering at one place .
formal

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 .
formal

Person1: What's so special today ?
Person2:Why ?
Person1: Didn't you notice all the roses ?
Person2:It's July 7th . Chinese Valentine's Day !
Person1: Oh , God . I just forget it .
Person2:I thought you had trouble with Clive !
Person1: No . But now he will be in bigger trouble ! What's a boyfriend for ? Forget about Valentine's Day ?
Person2:Poor guy ! It's not fair . You forgot it too .
Person1: Oh , it's Clive .
Person2:Wow ! Good timing .
Person1: Excuse me for a while.Clive asked me out to a movie ! Do you want to join us ?
Person2:Come on . Two is company .
Person1: So what ?
Person2:It's Valentine's Day . Come on . Just go .
formal