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: Darling , this dress is for you . I hope you like it .
Person2:Oh , very beautiful . Thank you , Steven , I like it very much .
Person1: Your birthday is coming , and I think this dress suits you . Why not try it now ?
Person2:My birthday present ? I can't help telling you that I am a happy woman , darling . I will come back soon . ( Go to her bedroom and wear the new dress , then show it to Steven . )
Person1: It fits me exactly . How does it look like ?
Person2:It displays your slender figure , darling .
Person1: The most important thing is that you bought it for me . I am happy that you know my size and style .
Person2:Because you are my dear wife .

Answer: informal

Question: Person1: I am going on my first date tonight . Can you give me some suggestions about what to wear ?
Person2:Well , I think you look very pretty in your polka dot purple dress with your hair piled at the rear . That makes you very graceful and mysterious .
Person1: Yeah , that's a good idea . Let me try it .
Person2:Remember to match it with your glittering star-shaped necklace . Very attractive on formal occasions .
Person1: Do I look more mature in the highheel shoes ?
Person2:Sure , more elegant and taller .
Person1: I shall wear light make-up instead of heavy . The face powder will lighten my skin color .
Person2:If I were your date , I would be so charmed by you .
Person1: Thank you .

Answer: formal

Question: Person1: Oh you look awful ! What ' s the matter ?
Person2:Oh ! I feel really under the weather . I ' Ve got a sore throat and a bad cough .
Person1: Oh dear . Maybe you ' Ve caught a cold .
Person2:Yes , I ' Ve had lots of overtime to do recently and I haven ' t slept much at all .
Person1: Well then , you should get some rest this weekend and don ' t go out drinking .
Person2:Yes , I think you ' re right !

Answer:
formal