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 do we need for the barbecue ?
Person2:Well , I ' Ve bought a lot of meat . I ' Ve got pork chops , small steaks , chicken wings , and plenty of hot sausages and hamburger patties .
Person1: I can ' t wait to start cooking ! I ' Ve bought the grill and charcoal . Do you have enough plates and utensils ?
Person2:I think so . I bought some paper plates and cups for people to use . It will save on the washing up !
Person1: And if people drop them , they won ' t break . We ' ll need to buy some buns to make hot dogs and hamburgers .
Person2:They sell them at the shop around the corner . We can go and get some in a few minutes .
Person1: I brought some cheese to make cheeseburgers and some onions for the hot dogs . We ' ll need some tomato ketchup and some barbecue sauce .
Person2:I have the sauce , but remind me to get some ketchup at the shop .
Person1: How long does it take to cook meat on a barbecue ?
Person2:It only takes a few minutes . Some people like their meat well done . Others like it rare . The great thing about a barbecue is that everyone can choose how they want their meat cooked .
Person1: They can cook it themselves to make sure it ' s exactly how they like it .
Person2:I hope you haven ' t invited any vegetarians !
Output:
informal