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: Reference number is 29IN9CT3 for the acorn guesthouse. Sentence2: Sounds great if it is portuguese. I'll take a reservation for 7 people at 20:00 for the same day. Sentence3: Okay, how about the Acorn Guest House in the north? Sentence4: There is. How does Nandos City Centre sound? Sentence5: Okay, it was my pleasure to assist you! Bye! Sentence6: No, that's all I needed today. Thank you for your help! Goodbye! Sentence7: do you have one the is portuguese food ? Sentence8: I'm looking for information on 4-star rated guesthouses in Cambridge Sentence9: You're all set. Your reference number is 6R5W1RRE and your table will be reserved for 15 minutes. Anything else? Sentence10: I suggest the dojo noodle bar, an asian oriental restaurant, would you like to make a reservation? Sentence11: Sure. Can we spend 5 nights starting on Sunday? I am going to need room for 7 people. Sentence12: I have a number of 4 star guesthouses available, would you like to book one in a particular area? Sentence13: I would also like to eat somewhere cheap in the middle of town. Sentence14: Not really. Could you suggest one with free parking? Question: Who has spoken the sentence 7? (A) User (B) System

SOLUTION: Answer: (B) System

PROBLEM: Sentence1: You're welcome and enjoy your stay. Sentence2: Can you help me find a hotel in the North part of Cambridge? Sentence3: I have two moderately priced hotels in the north for you. The Ashley Hotel and the Lovell Lodge. Would you like me to book one? Sentence4: Great I can take care of that. How many people? How long will you be there and when will your stay start? Sentence5: Booking was successful. The table will be reserved for 15 minutes. Reference number is : E4J0YE8W . Anything else. Sentence6: thanks very much to you! I am done now. Farewell! Sentence7: I would like to book the Ashley Hotel. Sentence8: Okay, be on the lookout for a grey honda. The contact # is 07374179224 Sentence9: There will be 7 of us arriving Sunday. We will be staying 3 nights. Sentence10: They do both have internet. Sentence11: Yes I am needing a restaurant that is the same price range as my hotel and in the same area. Sentence12: There are two; The Golden Wok which is a Chinese place, and The Nirala, with Indian cuisine. Which would you prefer? Sentence13: Does it have internet? Sentence14: I will go with The Nirala since I love Indian food. Please book it for 11:00 for the 7 of us on Sunday. Sentence15: I was able to book the room for you the reference number is HQKA3TBW . Can I help you with anything else? Sentence16: Yes, I want a taxi too. I'll need contact number and car type. It should pick me up at the hotel and arrive at restaurant by 11:00 Question: Who has spoken the sentence 11? (A) User (B) System

SOLUTION: Answer: (B) System

PROBLEM: Sentence1: Yes that sounds good may I have the phone number please? Sentence2: Not a problem! Can I help you with anything else today? Sentence3: How about your area preference and star rating of the hotel? Sentence4: Sure! The phone number is 01223333200. Anything else for you today? Sentence5: I prefer hotels. Moderately priced. Sentence6: No star preference, just as long as it's moderately priced. Thank you. Sentence7: Sure, do you have any area preferences? Sentence8: I would recommend the ashley hotel. Would you like more information? Sentence9: I am looking for colleges to visit while I am in town. Sentence10: Yeah. Moderate price range. Internet and parking are not a priority for me. Sentence11: There are 5 in town, but I recommend Clare College in the west. It's free to visit. Does that sound good? Sentence12: Not right now. Thank you for the information! Sentence13: Thanks for using our service. Have a nice night. Bye. Sentence14: The ashley hotel fits your needs and has 2 stars. Would you like a booking? Sentence15: I'd like one with free wifi, and could you give me the star rating? Sentence16: How about A and B Guesthouse? It is moderately priced. Sentence17: I am also looking for a place to stay. Could you help with that? Sentence18: Nope! That will do it, thanks! Question: Who has spoken the sentence 12? (A) User (B) System

SOLUTION:
Answer: (A) User