Definition: 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'.
Input:  Person1:       Steven , what's your idea of price ? 
 Person2:The best we can do is $ 120 per case . 
 Person1:        I'm afraid that's impossible . You can't expect us to reduce it to that extent . 
 Person2:I think you are well informed about the prevailing market.Some Spanish firms are offering the same at much lower prices . 
 Person1:        Price can't be separated from quality . A comparison of the quality of our products with that of rival goods will show you that ours is far superior . 
 Person2:It's true yours are of better quality . But your price is still on the high side even if we take quality into consideration . How about meeting each other half way ? 
 Person1:        Well , I'll have to think about it and get back to you in about 30 minutes . 
 Person2:Take your time , please . 

formal