instruction:
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'.
question:
Person1: Did you hear who won the English speech contest ?
Person2:No , who won ?
Person1: It's George .
Person2:Really ? I'm surprised . I didn't know his English was that good .
answer:
informal

question:
Person1: I think we should accept his plan .
Person2:I'm afraid I can't agree with you .
Person1: Why ?
Person2:Simply because it's not practical at all .
answer:
formal

question:
Person1: Did you watch the live telecast of the World Cup last night ?
Person2:I missed it . I watch a live show of a concert .
Person1: What's the band called ?
Person2:Love Music Woman
answer:
formal