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'.

[EX Q]: Person1: He has so many friends supporting him .
Person2:And he himself is very diligent . Considering all these , I think he has the ball at his feet .
Person1: But he has to stick to it and to it long enough .
[EX A]: informal

[EX Q]: 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 .
[EX A]: formal

[EX Q]: Person1: Hey , Cindy , I'm so sorry about yesterday . I shouldn't have yelled at you in front of everyone .
Person2:Don't worry about it .
Person1: I don't know what happened to me . I just lost it .
Person2:I think you just need to get more sleep .
Person1: Yeah , you're right . Good night .
[EX A]:
informal