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: What day would you like to start your reservation? Sentence2: Could you see if there is a restaurant that serves British food in the same area as the hotel? Sentence3: You are welcome. Sentence4: Three people please, on Monday at 18:30. Sentence5: Booked you a table at the oak bistro. Your reference number is SSUTW528 . Sentence6: I'm looking for hotels in the center. Sentence7: Yes, please book a room for 3 people and 5 nights. Sentence8: The University Arms hotel fits all of your criteria, would you like me to book a room? Sentence9: I would like for the hotel to have a 4 star rating and include free wifi. Sentence10: I don't have a preference. Sentence11: The Alexdander Bed and Breakfast is a good recommendation. It has four stars and affordable pricing. The Gonville Hotal is also a good choice. Would you like the address to either? Sentence12: Please start the reservation on Monday. What is the reference number? I also need a restaurant that serves australasian food at a moderate price in the same area as the hotel Sentence13: I am sorry but there are no restaurants in that area which meet your criteria. Would you like me to search for another type of cuisine? Sentence14: Certainly, we have either restaurant one seven, the oak bistro, the copper kettle, cotto. Can I book a table at one, if so how many will be dining? Sentence15: Thank you very much for your help. Sentence16: There are two, one in the expensive price range, one in the cheap price range. Which do you prefer? Question: Who has spoken the sentence 9? (A) User (B) System
Output: 


Answer: (B) System