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:       Give these sales figures a look . It's pretty depressing . We're way in the red this year . We can't afford to keep going like this for much longer . 
 Person2:You're right , we need to start making money soon , or at least manage to break even . But I think that the market is slowly beginning to heat up--sales are bound to pick up any time now . 
 Person1:        Deman is dropping . The problem is our competition . They are monopolizing the market ! 
 Person2:Maybe we should rethink our marketing strategy to include the possibility that our new line of cosmetics could be a big seller . 
 Person1:        It's really too early to tell , but a lot is riding on the new products . If we don't do better after the product launch , we may have to go bankrupt . 
 Person2:Do you think it's that serious ? 
 Person1:        Look at this numbers and see for yourself . Read'sm and weep . 
 Person2:My goodness , I didn't realize it was that bad . 

informal