Definition: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.

Positive Example 1 -
Input: Sentence1:i need a place to dine in the center thats expensive Sentence2: I have several options for you; do you prefer African, Asian, or British food? Sentence3: Any sort of food would be fine, as long as it is a bit expensive. Could I get the phone number for your recommendation?Question: Who has spoken the sentence 2? (A) User (B) System
Output: Answer: (A) User

Positive Example 2 -
Input: Sentence1: Guten Tag, I am staying overnight in Cambridge and need a place to sleep. I need free parking and internet. Sentence2: I have 4 different options for you. I have two cheaper guesthouses and two expensive hotels. Do you have a preference? Sentence3: No, but I'd really like to be on the south end of the city. Do any of those fit the bill? Sentence4: Sure. Does price matter? We can narrow it down and find exactly what you need. Question: Who has spoken the sentence 4? (A) User (B) System
Output: Answer: (B) System

Negative Example 1 -
Input: Sentence1: I am looking for a hotel named alyesbray lodge guest house. Sentence2: i have their info, what would you like to know? Sentence3: I would like to book a reservation for it. Can you help me with that? Sentence4: I sure can. First, I will need to know when you want your stay to begin and how many days you'll be staying. Also, how many people will be staying? Question: Who has spoken the sentence 1? (A) User (B) System
Output: Answer: (A) User

Negative Example 2 -
Input: Sentence1: Hi there! Can you give me some info on Cityroomz?. Sentence2: Cityroomz is located at Sleeperz Hotel, Station Road in the Centre area. It is a moderatley priced hotel with a 0 star rating. Would you like to book a room? Sentence3: Yes please. I need it for 7 people for 3 nights starting on tuesday. Sentence4: How many days would you like to book it for? Question: Who has spoken the sentence 4? (A) User (B) System
Output: Answer: (A) User

Now complete the following example -
Input: Sentence1: Great I also need a place to stay that is a guesthouse that includes free parking. Sentence2: There are a total of 12 guesthouses that are moderately priced in town. Are you sure there isn't a particular section you would like to stay in? Sentence3: Thank you. That is all I need today. Sentence4: Acorn Guest House is located in the north at 154 Chesterton Road. It is moderately priced and has four stars. The post code is cb41da. Sentence5: Excellent. Do you have an idea on the location? Sentence6: I don't really care what type of food it is. Any of them will do. Sentence7: Of course, their phone number is 01223518111 and the post code is cb11lh. I can make a reservation for you if you'd like, or help with something else. Sentence8: We have 21 restaurants to choose from. Is there a certain food type that interests you? Sentence9: I'm sorry, but we don't have any expensive guesthouses. All the expensive properties are hotels. Sentence10: Okay, I guess it'll save me some dough if I try for a place that's more moderately priced. Sentence11: Hello, I'm planning a trip to Cambridge and I'm looking for a place to dine. It should be moderately priced and located in the centre. Sentence12: Any location is fine, but I would prefer something that is in the expensive price range. Sentence13: Sure, I'll try it. Can I get their phone number and post code? Sentence14: Your very welcome! Enjoy your stay! Sentence15: Any of them will do. Pick your favorite and let me know what area they're in, and their postcode and how many stars they have? Sentence16: We have a wonderful Asian restaurant, called Yippee Noodle Bar, would you like to try there? Question: Who has spoken the sentence 13? (A) User (B) System
Output: 


Answer: (B) System