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:       What are you doing , karen ? 
 Person2:I ’ m making a shopping-list , Tom . 
 Person1:        What do we need ? 
 Person2:We need a lot of things this week . I must go to the grocer's . We haven't got much tea or coffee , and we haven't got any sugar or jam . 
 Person1:        What about vegetables ? 
 Person2:I must go to the greengrocer's . We haven ; t got many tomatoes , but we've got a lot of potatoes . I must go to the butcher's , too . We need some meat . We haven't got any meat at all . 
 Person1:        Have we got any beer and wine ? 
 Person2:No , we haven't . And I'm not going to get any ! 
 Person1:        I hope that you've got some money . 
 Person2:I haven't got much . 
 Person1:        Well , I haven't got much either ! 

formal