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: I think a museum sounds good. Sentence2: Do you have their contact number? Sentence3: There are five options, but I recommend maharajah tandoori restaurant, would you like more information or a booking? Sentence4: I suppose I could visit the one that cost. Could I get the address, phone number and postcode to that location please? Sentence5: cambridge and county folk museum is located at 2-3 castle street post code cb30aq. their phone number is 01223355159. is there anything else i could help you with? Sentence6: Thank you. What kind of car will they be driving? Sentence7: I will also need to book a taxi. Sentence8: Okay, please book for tuesday at 13:15. It'll be 5 of us dining. I'll need the reference number Sentence9: You are welcome Sentence10: Your all set! Sorry for any confusion. Your ref number is 9UQFB5UA make sure you get there 15 minutes ahead! Sentence11: Are you looking for anything in particular? There are museums, colleges, and an entertainment venue on the west side of town. Sentence12: Actually, I'm looking for an expensive place to eat after I visit the museum. I'm hoping for latin american food. Sentence13: There are several in that area. 4 has no entrance fee and 1 costs 3.50 pounds. Did you have a preference? Sentence14: How about Indian food. Sentence15: I'm sorry, there are none that meet your criteria. Is there anything else you would prefer, or maybe a not-so-expensive restaurant? Sentence16: I am sorry, our system is down and I can't get that booked right now. Is there anything else? Sentence17: They will be driving a white skoda. Is there anything else I can help with? Sentence18: Yes, their contact number is 07346227585 Sentence19: I'm looking for an attraction in the west. Sentence20: OK, I guess that is all. Thanks a lot! Question: Who has spoken the sentence 5? (A) User (B) System
Output: 


Answer: (B) System