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 address of the Nirala is 7 Milton Road Chesterton at the cb1uy postcode. Their number is 01223360966. Sentence2: Then may I suggest the a and b guest house? Sentence3: I want the cheap one. Sentence4: royal spice it is. Shall book it for you ? Sentence5: I also will need a taxi to pick me up at the hotel and get me to the restaurant by 02:15. Sentence6: Booking was successful your ref number is 1R8GSLHI, anything else today? Sentence7: On second thought, I'd like to go with Nirala? My friends want to try something a little more moderately priced. Can you give me the postcode, address and phone? Sentence8: What area would you like it to be in? Sentence9: Goodbye, enjoy your stay Sentence10: You have two options, The Nirala is moderately priced, royal price is cheap, any preference? Sentence11: I don't have a preference for what area, I do however want free WiFi. I would also like to stay in a guesthouse. Sentence12: The guesthouse is located on the east side at 124 tenison road. I am trying to book it but the system must be busy. I'll try again in a minute. Sentence13: Thanks that will be all for today. Goodbye. Sentence14: Yes, I'd like to find an Indian restaurant in the north please. Sentence15: I have booked grey volkswagen with contact number 07588046247. Anything else I can be of help? Sentence16: yes can you book it for 7 people and 3 nights starting from thursday ? Sentence17: I am looking to stay at a 4 star rated place in the moderate price range. Sentence18: Please try again Question: Who has spoken the sentence 10? (A) User (B) System

SOLUTION: Answer: (A) User

PROBLEM: Sentence1: I think you'd like TR8842 train, it costs 23.60 pounds. Sentence2: Thanks, it would be helpful if you also told me what time TR8842 leaves. Anyhow, I just got paid. Can you find me a high-end eatery serving European cuisine? Sentence3: No thank you. I'll just need the address for an expensive restaurant that serves European food. Sentence4: Train TR8842 leaves london kings cross at 15:17 on friday and arrives at cambridge at 16:08. Can I provide you more information or book it for you? Sentence5: Arrival time is not important. I just need to leave after 14:15. I will need the train ID and the price, please. Sentence6: Sorry! As I said, it's at Free School Lane City Centre. Can I help you with anything else? Sentence7: Hi, could you help me find a train going to Cambridge? Sentence8: Is there a time you would like to arrive by? Sentence9: Where and when are you departing from? Sentence10: I would like to leave on Friday Sentence11: No, that's it. Thank you. Sentence12: which side of town is most appropriate for you? Sentence13: Have a lovely day, goodbye. Sentence14: I am leaving from London Kings Cross after 14:15. Sentence15: I'm sorry, but I think you gave me the phone number. I need the address, please. Sentence16: I don't have a preference really, please recommend one. Sentence17: no. i just need the address Sentence18: What day would you like to leave? Sentence19: its address is 01223368786. is that it? Sentence20: How about the eraina located at Free School Lane City Centre. Would you like reservations? Question: Who has spoken the sentence 4? (A) User (B) System

SOLUTION: Answer: (A) User

PROBLEM: Sentence1: I need to know what day you will be arriving and how many nights and how many people will be staying. Sentence2: Sure, which part of town are you interested in? Sentence3: There is also churchill college on the west side. Their postcode is cb30ds. Sentence4: I just need a reference number for the reservation. Sentence5: what dad do i reserve and for how many? Sentence6: No that will be all thank you. Sentence7: Well I have Christ College in the city center and their postcode is cb23bu. Sentence8: Home from Home is a guest house located on Milton Road in the north area. Do you need additional information? Sentence9: I am looking for a college in town Sentence10: You are welcome, enjoy your stay. Sentence11: Do you have any other suggestions? Sentence12: Booking was successful. Reference number is : F9WOFY5C . Anything else I can help with? Sentence13: there will be 3 people and 4 nights from thursday Sentence14: Area does not matter. You pick, just let me know the area and postcode please. Sentence15: Thank you. I also need a hotel called home from home. Sentence16: i don't need any dads reserved. i already have one. Question: Who has spoken the sentence 15? (A) User (B) System

SOLUTION:
Answer: (B) System