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'.

Person1: Do you think the weather will be good this weekend ?
Person2:I heard it might rain .
Person1: Oh . That ' s a pity . I thought that we might go hiking in the hills .
Person2:Mmm ... Well we could go to that new art gallery instead .
Person1: Yes that might be a better idea .
Person2:Maybe we ' ll meet some of the artists too .
Person1: Ok - let ' s do that then !
informal

Person1: I am trying to decide what school to apply to ?
Person2:Are you thinking about a public school or a private one ?
Person1: I am not sure . What's the difference between them ?
Person2:Public schools are usually state funded , whereas private schools usually get their funding elsewhere .
Person1: Which is better ?
Person2:One isn't necessarily better than the other . It depends a lot on the school administration and the teachers .
Person1: I hear you have to wear uniforms at private schools .
Person2:Yes , sometimes .
formal

Person1: I have some photos here taken by myself . Would you like to see them ?
Person2:Sure . Speaking of photos , what type of film will be the best ? You know , I'm planning a tour to Jiuzhaigou Valley .
Person1: I would get Fuji 200 film for taking photos of natural beauty .
Person2:Thank you so much . You're an expert .
informal