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

Example Input: Sentence1: Booking was unfortunately unsuccessful. Can we try another day or a differen't time slot? Sentence2: Yes, please book a table for 4 people at 19:00 on Sunday. Thank you. Sentence3: Do you have anyplace that serves Chinese food? Sentence4: OK I will go with Italian food and pick the Pizza hut cherry hinton. Thank you for your help. Sentence5: Have a great day! Sentence6: Good news! Your reservation has been booked for Sunday at 18:00 for 4 people. The reference number is YJ0B5W19 . Is there anything else I can help you with? Sentence7: There are 2 options. Pizza hut cherry hinton serves Italian food and Restaurant alimentum serves modern European food. Sentence8: Would you like me to book that for you? Sentence9: I'm sorry, there are no Chinese restaurants located in the south that is moderately priced. Sentence10: How about 18:00? Sentence11: Hello. Could you help me locate a good moderate restaurant in the south of the city? Sentence12: That is all! Thank you! Question: Who has spoken the sentence 10? (A) User (B) System
Example Output: Answer: (A) User

Example Input: Sentence1: Thanks for handling the restaurant. I will have time to check out the town. Do you have multiple sports in the same area as the restaurant? Sentence2: I need a place to dine that is expensive in the centre. Sentence3: No, that's all I needed. Thanks for your help! Sentence4: Okay, I recommend midsummer house restaurant in Midsummer Common. Would you like a reservation? Sentence5: 01223334860 is the phone number, and entrance is free. Anything else today? Sentence6: Okay, that sounds nice. Can you give me their phone number and tell me their entrance fee? Sentence7: I can help with that. Did you have a price range in mind? Sentence8: Ok, you're all set, the table will be reserved for 15 minutes and your reference number is : 48QP48K1 . Can I help you with anything else? Sentence9: Yes I would love that. I need to make the reservation for 8 people for 16:15 on Thursday. Sentence10: Why don't you try looking for a college in that area instead please Sentence11: No, there aren't any multiple sports places in the centre. Would you like me to check a different part of town? Sentence12: There are 13 colleges in the centre. I recommend downing college. Sentence13: You have a wonderful day and a great trip. Sentence14: Expensive, please. British food. Question: Who has spoken the sentence 10? (A) User (B) System
Example Output: Answer: (A) User

Example Input: Sentence1: Yes please book the restaurant for me. Sentence2: Booking was unsuccessful. Would you like to book another day or a shorter day? Sentence3: I have successfully booked you a taxi! You will be driven in a Black Toyota and the contact number is 07914565807. Can I help you with anything else? Sentence4: There are a few hotels that meet your criteria. Would you be interested in the Alexander Bed and Breakfast? It has four stars with cheap prices. Sentence5: The booking was successful at the University Arms Hotel. Your reference number is: E7AK16IK . Would you like the phone number? Sentence6: There are 2 hotels in the expensive price range. One has 3 stars and one has 4 stars. Sentence7: No, that's all I need. Thank you for your help! Sentence8: I also need a restaurant the restaurant should be in the expensive price range and serve north american food. Sentence9: The hotel should be in the expensive price range. Sentence10: Please try to book a 1 night stay. Sentence11: I changed my mind. I will go ahead and book it myself. But, can you please provide me the address and postcode. Thanks. Sentence12: Could you book me a taxi please? I would like to leave the restuarant at 20:15 and go back to the hotel. Sentence13: The only result in your area meeting that criteria is Gourmet Burger Kitchen in centre. Would you like me to book a table for you? Sentence14: No problem. You have a good day now! Sentence15: Hello, are there any centrally located hotels in Cambridge with free parking? Sentence16: Gourmet Burger Kitchen is located at Regent Street City Centre, cb21ab. Can I help with anything else today? Sentence17: Not a problem. For what time and day will that be for? Sentence18: Let's go with the 4 star option. I'd like to book it for two people and three nights starting from thursday. Question: Who has spoken the sentence 15? (A) User (B) System
Example Output:
Answer: (B) System