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: Excuse me , I bought this sweater yesterday . But when I got home and tried it on , I found it ' s too small .
Person2:Do you have the receipt with you ?
Person1: Yes , here you are .
Person2:Thank you . Do you want your money back ?
Person1: No , can I exchange it for a bigger one ?
Person2:I am afraid this is the biggest size we have .
Person1: Oh , that's too bad .
Person2:Maybe you would like to try this one with the willow pattern . The price is the same and it's bigger .
[A]: formal

[Q]: Person1: what do you think about this store ? I heard it ' s a posh store that ' s only got branches in big cities .
Person2:I love this store . The only problem is that it ' s extremely expensive .
Person1: don ' t worry . I ' Ve decided that for your birthday I ' m going to take you shopping for a new dress .
Person2:really ? I thought you hated shopping ?
Person1: I do , that ' s why you should appreciate this gift !
Person2:sure . That ' s really nice of you . Let ' s go in and try some things on .
Person1: how about this red dress ? I think it would really suit you .
Person2:that ' s gorgeous ! Do they have it in a size 8 ?
Person1: here you go.On any other day , it would cost me a fortune , but it ' s on special offer today .
Person2:I think this color isn ' t quite right for me . Do they have the same dress in white ?
Person1: let me look . Let ' s see ... they ' Ve got one in blue , green , pink , black ... and white . Here you are .
Person2:this is perfect ! What do you think ?
Person1: I think you look fantastic . Happy Birthday !
Person2:I ' m so lucky . You only get a chance like this once in a blue moon ! Thanks honey !
[A]: informal

[Q]: Person1: I am kind of nervous .
Person2:Nervous ? Why ?
Person1: I don't know . I never went to a church before . I was not raised as a Christian , so I don't know what to do .
Person2:Don't worry . You don't have to do anything.All you have to do is listen . You will enjoy it .
Person1: Maybe . I know I agreed to go with you , but now I don't feel right about it .
Person2:Listen , Ryan.Catholics welcome people who aren't Catholics to visit the church.You don't have to pretend to be Catholic . It's okay if you just come to listen .
Person1: Really ?
Person2:Yes . We are kind and welcoming people.It is not a secret society or something like that .
Person1: Alright . But will we sing ?
Person2:Yes , but you don't even have to sing . If you want to sing along , you can .
Person1: I don't know the words .
Person2:There is a songbook . All the words are in the songbook.Many people have to read the words .
Person1: And will I go up to the front to have the bread and wine ?
Person2:No . That is something only true Catholics do.So if you come to the church as a visitor , you only listen to the service.But you shouldn't go up to the altar for the bread and wine.Only after someone joins the church , then they go up for the Eucharist .
Person1: Eu-char-ist ? What is that ?
Person2:That is the special word for the ritual of the bread and wine.The Catholics call it the Eucharist .
Person1: It doesn't sound like an English word .
Person2:It's not . It's an ancient Greek word . It means gratitude .
Person1: Alright . Well , I feel more comfortable now.Now I understand I am welcome as a visitor .
Person2:Of course you are . I wouldn't ask you otherwise .
[A]:
formal