Detailed Instructions: 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'.
Problem: Person1: The idea about Friday the Thirteenth is totally ridiculous . I don't believe it at all .
Person2:Maybe you can't be so sure .
Person1: Why not ? The whole idea is superstitious .
Person2:But some people use this occasion to create trouble . Have you heard of the Black Friday Virus on the computer ? It is designed to break out on every Friday the Thirteenth .
Person1: I know that . But that has nothing to do with being unlucky . Those who created the virus are deliberately making fun of people .
Solution:
formal