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: Is Milton Road Chesterton the full address for Hakka? I also need a train to cambridge. Sentence2: How about a chinese restaurant in the same area, same price range? Sentence3: I'm sorry, there are no restaurants that meet your criteria. Would you like to broaden your search? Sentence4: Thank You. Have a good day, goodbye. Sentence5: The phone number is 01223568988 and the postcode is cb41jy. Is there anything else you would like for me to do? Sentence6: I need to go from stevenage to cambridge on Friday, leaving after 8:00. Sentence7: Great thank you very much that should be all Sentence8: There are 8 trains the closest one to 8:00 leaves at 9:54, would this work for you? Sentence9: Yes, that's the full address. For the train, where are you coming from and on what day and time? Sentence10: I only need the phone number and postcode. Sentence11: I would not. I prefer this place to be expensive, have modern eclectic tastes, and be located north. Sentence12: Yes, you're all set on TR0601 at 11:54 with reference number CXZ3WY2N . The total fee of 76.8 GBP is payable at the station. Sentence13: I'm looking for a Modern Eclectic place to dine in the Cambridge North End tonight. Sentence14: I'm sorry, there are no restaurants that meet your criteria. Would you like to try a different part of town? Sentence15: No problem. I have Hakka at Milton Road Chesterton. How many would you like me to reserve for? Sentence16: Yes, that will work. Can you place a booking for 6 people on that train and provide a reference number? Question: Who has spoken the sentence 10? (A) User (B) System
Output: 


Answer: (A) User