TASK 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'.
PROBLEM: Person1: hi , come on in . Can I take your coat ?
Person2:sure , thanks . I brought you a bottle of wine as well .
Person1: you're the first guest to arrive . I'll just put your coat away and then I'll get you something to drink .
Person2:should I take my shoes off ?
Person1: whatever you prefer .
Person2:this is a very nice place . How long have you been living here now ?
Person1: just over three weeks . Would you like a drink ?
Person2:sure , what do you have ?
Person1: I've got white wine , red wine , gin and tonics , ginger ale , lemonade , orange juice , and sprite .
Person2:I'll have a glass of red wine please .
Person1: one glass of red wine coming up !
Person2:so how many people are coming for the dinner tonight ?
Person1: there's just going to be 6 of us tonight .
Person2:oh , I thought there were going to be eight . who isn't coming ?
Person1: Marcia and Paul called to cancel at the last moment . Paul was running late and Marcia wasn't feeling well .
Person2:that's too bad.They ' re such good company .
Person1: I think there's someone at the door .
Person2:excuse me while I go and get that .

SOLUTION: formal

PROBLEM: Person1: What color is your new dress ?
Person2:It is green . Come upstairs and see it .
Person1: Thanks you .
Person2:Look ! Here it is !
Person1: That ' s a nice dress . It ' s very smart .
Person2:My hat ' s new , too .
Person1: What color is it ?
Person2:It ' s the same color . It ' s green , too .
Person1: That ' s a lovely hat .

SOLUTION: informal

PROBLEM: Person1: Hey , Daniel , how's it going ?
Person2:Hey , Daddy , today I had really a fantastic history class .
Person1: Wow , it's so strange for you to say things like that . What had happened ?
Person2:We've learnt the story of Zheg He Sailing to West Ocean . He is a real great navigator .
Person1: Did your teacher tell you the route he took ?
Person2:Yeah , he , with his fleet , came across the Indian Ocean , and arrived at the east coast of Africa .
Person1: Great , do you still remember when he started his voyage ?
Person2:Of course , that is from 1405 to 1433 , which is in Ming dynasty .
Person1: Good , by the way , do you finish reading the book Robinson Crusoe I've bought for you ?
Person2:Not yet , you know I have a lot of homework to do .
Person1: You should speed up , because the story of Robinson can give you a better understanding about what you learned today .
Person2:OK , great Daddy , after supper , I'll embark on it .
Person1: That's my boy ! Wait , Daniel , when is Pirates of the Caribbean on ?
Person2:Is it about Captain Jack Sparrow , who wants to find the treasure on the sea ?
Person1: Exactly , now , tell me the time .
Person2:I won't tell you , unless you promise to let me watch it with you .

SOLUTION:
informal