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: Hi , charlie , are you busy this evening ?
Person2:Sorry , I'm afraid that I've got plans tonight .
Person1: What are you doing ?
Person2:I'm going to my parents ' house for my father's birthday .
Person1: How old is he today ?
Person2:It's his 50th birthday .
Person1: Well , wish him a happy birthday for me .
Person2:Sure thing . What are your plans for the evening ?
Person1: I was just thinking of going to a movie tonight .
Person2:Well , if you can wait until tomorrow night , I'll go with you then .
Person1: Sorry , I've got people coming over tomorrow night .
Person2:Sounds like this weekend just isn't going to work out for us .
Person1: Sounds that way . Maybe some other time then ?
Person2:Sure.Hey , I'm sorry , but I've got to get going .
Person1: Yeah , me , too . It's about time I made a move .
Person2:Say hello to your friends for me .
Person1: Likewise . See you later .
Person2:Bye !

A: informal
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Q: Person1: Professor , can you help me add your class ?
Person2:You have to bring me an add sheet to sign . Do you have one ?
Person1: No , I will have to get an add sheet .
Person2:You must take the signed add slip to the Admissions and Records Office to add the class . Do you know where that is ?
Person1: No , I don't know where that is .
Person2:The office is in front of you as you cross the quad . The signs in the hallway will tell you where you need to be .
Person1: I think I can find it .
Person2:You'll find it easily . Make sure you add the class and then we will look at the roll sheet later to make sure that you were added on .
Person1: Thank you for letting me add your class .
Person2:To drop a class , you need to do the same thing with a drop slip . Good luck !

A: formal
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Q: Person1: are you good at making decisions ?
Person2:not really . Sometimes , I even let other people make key decision for me .
Person1: what kinds of decisions do you leave to other people ?
Person2:there are basic decisions like which restaurant to go to . I can never seem to choose . I let my parents make big decisions for me . They chose my university and my course . I ended up studying something
Person1: your parents will be choosing your girlfriend if you aren ' t careful ! Why don ' t you try being more decisive ? Start with some basic ones . When your friends are discussing which restaurant to eat at , mak
Person2:that ' s a good idea . You ' re very decisive , I ' Ve noticed . So , which bar are we going to this evening ?
Person1: I can ' t make a decision . You ' ll have to put forward an idea .
Person2:ok , i choose luckies .
Person1: you see ? You ' re becoming more decisive already !

A:
informal
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