You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.

Ex Input:
Sentence1: Thanks for the help, bye! Sentence2: I have many varying from moderate to expensive in price range. Do you have a preference? Sentence3: Have a great day! Sentence4: Certainly, I have booked your car, it will be a yellow skoda the contact number is 07839693090. Is there anything else I can assist with? Sentence5: Yes. I am looking for a college as a place to go in town. Sentence6: I recommend Tandoori Palace, would you like me to book a table for you? Sentence7: Tandoori Palace is located at 68 Histon Road Chesterton, postcode cb43le. Their phone number is 01223506055. Is there anything else I can help you with? Sentence8: I would recommend Clare Hall would you like to visit that? Sentence9: No, that is all. Thank you! Sentence10: Yes, please. Can you book a taxi for me? I'll be heading from Clare Hall to Tandoori Palace, and I'd like to be picked up at 18:15. Sentence11: I'm looking for a restaurant in the west that serves Indian food. Sentence12: I don't need a reservation, but could you give me their address, postcode, and phone number, please? Sentence13: What do you have in the expensive price range? Sentence14: Clare College is located on Trinity Lane in the west area of the city. The entrance fee is 2.50 pounds. Is there any other information I can get for you? Sentence15: Glad we could be assistance. Sentence16: Sure, but first I'll need to know the entrance fee, area, and address. Question: Who has spoken the sentence 11? (A) User (B) System

Ex Output:
Answer: (B) System

Ex Input:
Sentence1: Yes. Book for 2 people for 4 nights on thursday and I'll need the reference number too please Sentence2: Okay, great! Enjoy your day. Sentence3: I have your table for 2 booked at the Bedouin. Would you like anything else? Sentence4: Your booking was successful. Your reference number is Q5BKFIC3 Sentence5: The reference number is 0LG9G1BT . Is there anything else I can help you with? Sentence6: We have one restaurant, the Bedouin. Would you like me to make you a reservation? Sentence7: I need the reference number too please. Sentence8: 2 people for Thursday at 19:00 please Sentence9: I was unable to find anything matching that. Would you like to try again? Sentence10: How about African food in general? Sentence11: yes please. Sentence12: The Limehouse is a moderately priced guesthouse on the north side of Cambridge. They are a 4-star establishment and offer free parking and Internet. Would you like to make a reservation? Sentence13: Thank you. Can you find us some good eats, too? We'd like something moderately priced that serves South African cuisine. Sentence14: I would be happy to book a reservation for 2. What day are you looking at and time? Sentence15: I am looking for a hotel in the Cambridge area called the limehouse. Sentence16: Thank you that is all I need. Question: Who has spoken the sentence 14? (A) User (B) System

Ex Output:
Answer: (A) User

Ex Input:
Sentence1: I sure can. I found a 3 star hotel and a 4 star hotel. Do you have a preference? Sentence2: Great, thank you for your help. Sentence3: Thank you , good day to you. Sentence4: You are very welcome! Is there anything else I can help you with? Sentence5: How about the Gonville Hotel located in the centre of town is in the expensive price range? Sentence6: Good afternoon, can you help me find an expensive place to stay in the town centre? Sentence7: It should be a hotel type hotel not a guesthouse Sentence8: Yes, that sounds good. Could you reserve a room for 5 people checking in on Saturday? I think we'll stay for 3 nights. Sentence9: Booking was successful. Reference number is : KRJNYV0Q . Sentence10: No, that will be all. Thank you. Question: Who has spoken the sentence 6? (A) User (B) System

Ex Output:
Answer: (A) User