TASK DEFINITION: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
PROBLEM: Sentence1: The hotel should be in the moderate price range and should include free wifi. Sentence2: Booking was successful. Reference number is : WJFFGVWD . Is there anything else I can help you with? Sentence3: I've found several hotels in the moderate price range. Is there a specific area of town you're looking to stay in? Sentence4: How about the Acorn Guesthouse? Free wifi and moderate price range. Sentence5: Sure, book me for 2 people for 5 nights starting on Monday? Sentence6: That will be all. good bye. Sentence7: Yes, I'm looking to stay in the north. Sentence8: I am actually looking for a hotel. Is the Acorn Guesthouse listed in that type? Sentence9: No, it is not. How about Ashley hotel? Sentence10: I'm looking for lodgings that are moderately priced. Sentence11: Good bye, enjoy your stay. Sentence12: I've found 11 possibilities for you. Would you prefer a guest house or a traditional hotel? Question: Who has spoken the sentence 4? (A) User (B) System

SOLUTION: Answer: (A) User

PROBLEM: Sentence1: Might I suggest the Autumn House. It is a cheaper guesthouse that offers both free parking and free internet. Would you like more info for them? Sentence2: It really doesn't matter. I don't need internet. I just for sure want a 4 star place. Sentence3: Thank you! Can you also get me a train going to Cambridge that day? Sentence4: Sure. There are six different options in that area. What were you looking for as far as price range and amenities? Sentence5: Is there anything else that you need? Sentence6: I need a 4 star hotel in the east, please. Sentence7: I think this is what I needed. Thanks. Sentence8: Sure! I just need to know where you plan on departing from and what time you'd like to leave. Sentence9: Booking was successful. Reference number is : 544D87NG . Sentence10: I need a room for 4 for 4 nights starting on Tuesday. Question: Who has spoken the sentence 3? (A) User (B) System

SOLUTION: Answer: (B) System

PROBLEM: Sentence1: Thank you for using our services. Enjoy your trip. Sentence2: I am looking for a restaurant in the expensive price range. Sentence3: No, that's all I need today. Thanks for your help! Sentence4: Sure thing it's booked, reference is 7QF5EFOW . Is there anything else you need help with today? Sentence5: I have several options for you. Do you prefer a specific type of food, or location? Sentence6: There are 110 different options. Might I suggest Kymmoy? The address is 52 Mill Road City Centre. The phone number is 01223311911. Sentence7: There are many restaurants that match your needs. Do you have any food preferences? Sentence8: Yes, that would definitely work for me. Thanks. Sentence9: I found 11trains, would a 13:11 departure work for you? Sentence10: No preference, just need the address and phone number of the restaurant. Also I am needing a train from Cambridge, nee to leave after 12:15. Sentence11: Would you like me to book that train for you? Sentence12: Yes please, can I get the reference number for 4 people Sentence13: That sounds good, thanks. I also need to get from cambridge to kings lynn on saturday. I can leave anytime after 12:15. Sentence14: I would like something in the center of town, please. Question: Who has spoken the sentence 12? (A) User (B) System

SOLUTION:
Answer: (A) User