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:       Let's have seafood tonight and then go see the new movie at Mall Cinema.Betsy told me it's a beautiful love story and I shouldn't miss it .  
 Person2:Oh , Goodness , please not again.That ' s what we did last week .  
 Person1:        No , we didn't . Last week we went to see that movie about a man's struggle against mental illness .  
 Person2:Right , it was a chick flick , just like this one , so what's the difference ? Besides , this is the last week for the third movie in Destroyer series and I want to see that on a big screen . Action movies need to be seen in a theater on a big screen .  
 Person1:        Oh , yeah , and I did promise to see it with you if we went to that movie last week.But you liked that movie , didn't you ?  
 Person2:Oh , sure , it was great . I had popcorn for dinner and paid the price of a movie ticket to get a two-hour nap .  
 Person1:        It wasn't that bad , and you're the one that insisted on skipping dinner.We went to an excellent restaurant .  
 Person2:That place doesn't have a single meat dish.Just fish and shellfish and you know I don't like fish that much .  
 Person1:        And I don't like meat that much.The only meat I eat is chicken .  
 Person2:But when I pick the restaurant , we go to a place that has both chicken and fish . I always respect your food preferences .  
 Person1:        Well , I suppose that , to be fair , you should get to pick the movie and we can go to a restaurant that serves meat .  
 Person2:Now you're talking , we can see that love story next time . 

informal