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: Can you tell me the time ? I've got an appointment at 8: 30 .
Person2:It's 8 sharp by my watch .
Person1: Gee ! There's only thirty minutes to go .
answer:
informal

question:
Person1: What do you think of your teacher ?
Person2:He's very strict with us .
Person1: And I hear he gives very good lectures .
Person2:Indeed.He ' s strict with himself , too.We can see every lecture of his is well-prepared .
answer:
formal

question:
Person1: Would you like to see our new shirts ?
Person2:Sorry , but I ' m not really interested in those things .
Person1: But they ' re very nice , you know .
Person2:Really .
Person1: And not expensive either .
Person2:Oh , I don ' t care about that .
Person1: Everybody is buying them .
Person2:Are they ?
Person1: Yes , they ' re very fashionable , you see .
Person2:I ' m afraid I ' m not interested in fashion .
Person1: I see .
Person2:But thank you very much all the same .
Person1: Sorry , I couldn ' t help you .
answer:
formal