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: Here ' s a letter for you .
Person2:Let me see it .
Person1: Who ' s the letter from ?
Person2:It ' s a letter from UCLA about my acceptance .
Person1: Read it !
Person2:UCLA accepted me !
Person1: Really ?
Person2:I ' m not joking . I got accepted !
Person1: I ' m so happy for you !
Person2:UCLA was my second choice , but I ' m happy knowing I ' Ve been accepted .
Person1: I am really proud of you .
Person2:You have no idea how proud I am of myself .
[A]: informal

[Q]: Person1: It's four o'clock already . I hate to leave , but I think I must .
Person2:Can you stay a little longer ?
Person1: I'm sorry , but I can't .
[A]: informal

[Q]: Person1: Charlotte , have you had your supper ?
Person2:No , I don ' t want to eat anything .
Person1: Why ? Don't you feel well ?
Person2:I ' m down in spirits .
Person1: What's up ?
Person2:My manager jumped on me for my mistake today .
Person1: You must not feel depressed about such a trivial thing .
Person2:I think I'm too clumsy . I can do nothing well .
Person1: You'd better shape up if you want to get the job done .
Person2:But I doubt myself .
Person1: Cheer up ! Don't let me down . We all make mistakes , and that is life .
[A]:
informal