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: The first train after that time is TR8966. It leaves at 21:01 and arrives in Broxbourne at 22:01. Would that work or do you prefer a later train? Sentence2: no thanks, i'm also looking for an italian restaurant Sentence3: That's wonderful. Have a great day and let me know what I can do for you if you need me in the future. Sentence4: La Margherita is a great place located in the west. Would you like a reservation? Sentence5: I don't care, should be in the cheap price range. Sentence6: Sure. It's located on 15 Magdalene Street City Centre and the postcode there is cb30af. Would you like the phone number as well? Sentence7: Okay! What part of town would you like to dine in? Sentence8: I am planning a trip to Cambridge Sentence9: I'm going from Cambridge to Broxbourne, departing after 20:45 on Friday. Sentence10: That is fine, can I also get the total travel time for that? Sentence11: The travel time for that route is 60 minutes. Did you need any tickets? Sentence12: I need a train for friday? Sentence13: The phone number for La Margherita is 01223315232. Can I assist you with something else? Sentence14: Yes. please thank you. Sentence15: Do you need a train? Or would you like information on restaurants, attractions, or hotels? Sentence16: That is all, thank for your help. Sentence17: There are hundreds of trains I can book for you. Where are you going and what time do you need to be there? Sentence18: No reservation for now. But, can you please provide me with the address and postcode please? Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User