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: Thank you! That will be all for today! Sentence2: I'm glad I could help. Sentence3: Yes, can you give me the address, phone, and postcode. Sentence4: May I suggest Golden House? It sounds like what you are looking for. Shall I provide more information? Sentence5: We have several Chinese restaurants in that area. What price range were you looking for? Sentence6: Cambridge Leisure Park Clifton Way Cherry Hinton, cb17dy. 01223244277. Is there anything else? Sentence7: Cool I also need a taxi Sentence8: Oh goodness. My mistake. I was supposed to be going to the south part of town. Can you see if you have any cheap chinese restaurants in that area? Sentence9: I need a taxi leaving the attraction by 23:45, heading to the restaurant. Sentence10: I have booked the taxi. A yellow Audi will be picking you up. Please call 07623682375 should you need to reach them. Sentence11: No problem. Yes there is one the lucky star. Sentence12: Can I have the address, postcode, and number for that restaurant as well? Sentence13: I also need the number to an attraction called Cambridge contemporary art please. Sentence14: What are your departure and destination sites? when would you like to leave or arrive? Sentence15: I'm looking for a chinese restaurant in the center of town. Sentence16: Sure! 12 Lensfield Road City Centre, cb21eg. The phone number is 01842753771. Sentence17: The number to the Cambridge contemporary art museum is 01223324222. Is there anything else I can help you with today? Sentence18: I want something cheap. Question: Who has spoken the sentence 1? (A) User (B) System
Output: 


Answer: (B) System