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'm looking for a hotel in the moderate price range. I definitely want a hotel, not a guesthouse. Sentence2: The cambridge belfry is located at back lane, cambourne. Do you need more information or would you like to book now? Sentence3: That will be all for today. Have a great day. Goodbye. Sentence4: I also need a taxi between the two places. Sentence5: Please give me the travel time, departure location and arrival location. Sentence6: Ok i'm sorry but i'm confused. Would you like reservations? What day will it start? How many people? Sentence7: For how many days? Sentence8: What is the address and phone number? Sentence9: Of course. There are two hotels in the north and one in the centre of town. Do you have a preference? Sentence10: Their contact number is 07055906987. Is there anything else I can help you with today? Sentence11: No, there is not. Sentence12: Thank you for the reservation. I am also looking for a lovely park in north Cambridge. Sentence13: I'm sorry for the confusion. I would like a reservation for five people for four nights, beginning Friday, at the Cambridge Belfry. Sentence14: Will this start on Friday? Sentence15: i want to leave the hotel by 4:30 Sentence16: Thank you for using the Cambridge TownInfo centre. Goodbye. Sentence17: Great your booking is complete. You will be picked up in a grey BMW by 4:30 at The Cambridge Belfry and dropped off at the Milton Country Park. Sentence18: I would suggest Milton country park. Sentence19: is there one in the cheap range? Sentence20: You are all booked and your reservation number is L76Y47ZV Sentence21: Do you have their contact number? Sentence22: Is there anything to the west, preferably with a 4 star rating? Sentence23: I want to be pickup at at the hotel by 4:30. Sentence24: Yeah book for 5 people Sentence25: I'm sorry but nothing exists in the north with a 4 star rateing in the moderate price range. Could we try another area? Sentence26: Oh goodness. Can you check once again for a hotel, star 4, in the west. Cheap is fine. Sentence27: What time do you need to leave the restaurant by? Sentence28: The phone number is 01223420060. Question: Who has spoken the sentence 3? (A) User (B) System
Output: 


Answer: (B) System