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:       I love your little Lulu dolls.How much for a batch of 6,000 ? 
 Person2:For a batch of 6,000 we would charge two dollars a doll . your total cost would be $ 12,000 . 
 Person1:        That ’ s a little steep for our company.Do you offer any discounts ? 
 Person2:Well , we ’ d like to work with you . If you ordered a larger quantity we could drop the price a little . Can you increase your order to 15,000 ? 
 Person1:        Hmmm.It wouldn ’ t be easy , but if the discount makes it worthwhile , we can consider it.How much of a discount would that give us ? 
 Person2:For order of 12,000 or more we charge only $ 1.5 a doll . your total cost would be $ 18,000 . 
 Person1:        So , for an additional 6,000 dollars , we get twice as many dolls ? That still might be a little hard.Couldn ’ t you discount it further ? We ’ Ve been pricing other suppliers , and this discount might 
 Person2:We do value your business . I think I can offer a further discount – say 5 % ? 
 Person1:        I think we can handle that . Let me confirm with my boss and touch base with you again tomorrow . 

formal