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: Ma , I really don't know how to thank you .
Person2:I'm glad I was able to help .
Person1: It's most kind of you .
Person2:Don't mention it . It was the least I could do .
Person1: If there's ever anything I can do for you , Don't hesitate to let me know .
Person2:Thank you .
Person1: I'm most grateful .
Person2:It was a pleasure .
[A]: informal

[Q]: Person1: Do you remember Tina , my good friend ?
Person2:Yes .
Person1: She just broke up with her boyfriend .
Person2:Well , that happens . I hope she is all right .
Person1: But the problem is she and her ex-boyfriend are working in the same department . It is somehow embarrassing for them to see each other everyday .
Person2:That is the down side of an office romance . I hope their work is not affected by the emotional stress . The boss must be very annoyed if that will be the case .
Person1: Well , Tina says she would be able to handle it and concentrate on her own work , easier set them done . But working harder and concentrating only on the job might well helped to overcome the initial stress of the breakup .
[A]: formal

[Q]: Person1: I can ' t decide what to do today .
Person2:Well . Let ' s go swimming .
Person1: Don ' t you think it ' s a bit cold for that ?
Person2:Then why don ' t we go for a walk in the hills . It ' d be very good for us you know .
[A]:
informal