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: That would work for me. Sentence2: There are 10 in the area. Which price range would you like to narrow the results down to? Sentence3: Great! Is there anything else I can assist you with? Sentence4: What about a Chinese Restaurant? Sentence5: Um are there any chinese places to eat in that area? I want to keep my options open. Sentence6: Yes I would please. Thanks. Sentence7: I'm not really concerned with price. Which would you suggest? Sentence8: Could you give me the train ID, too? Sentence9: Would you like me to book that for you? Sentence10: Unfortunately, there are no restaurants matching your query. Shall we try a different food type perhaps? Sentence11: I would recommend the rice house, would you like reservations? Sentence12: Can I get the address to the Rice House? Sentence13: Booking was successful, the total fee is 12.8 GBP payable at the station . Reference number is : RD07CL03 . Sentence14: Rice house is cheap. The post code is cb12bd. Sentence15: Yes, can you please and send me a reference number? Thank you Sentence16: The only one in the area is called Rice House. Sentence17: I just need the address, price range, and the postcode. Sentence18: Rice house is cheap. The postcode is cb12bd and address is 88 Mill Road City Centre. Anything more today? Sentence19: What is the price range on that? And also the post code? Sentence20: The Train ID is TR9448. Is there anything else i can help you with today? Sentence21: Sure. The address is 88 Mill Road City Centre. Is that all for you today? Sentence22: Thanks, I'm all set now. Have a good day! Sentence23: Okay, your ticket has been booked! Would you like the reference number? Sentence24: I am looking for a restaurant in the centre that serves modern eclectic food. Sentence25: There is a train that leaves stevenage at 05:54 a.m on Wednesday and arrives in cambridge at 06:43 a.m. Sentence26: Cool, I will go with that, no need ot book a reservation, Ill do it later, that is everything. Sentence27: I'm looking for a train that leaves on Wednesday from Stevenage. Can you help me locate one? Sentence28: You're welcome. Have a great day! Question: Who has spoken the sentence 24? (A) User (B) System
Output: 


Answer: (A) User