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

Example Input: Sentence1: I do not care about the area but I would like it to be expensive. Sentence2: How about the Gonville Hotel which is centrally located? It has internet and is expensive. Sentence3: I found 5 hotels matching your request. I would recommend Huntingdon Marriott Hotel located in the west. It has a 4 star rating. Sentence4: Will you be needing a reference number? Sentence5: On what day will you be checking in? Sentence6: 4 people will be staying Sentence7: I also need a place to stay? Sentence8: Your table will be reserved for 15 minutes. Your reference number is GDZZ5T1Y . Can I assist you further? Sentence9: That is all, thanks. Sentence10: Booking was successful. Reference number is : M6FRXJOV . Sentence11: I have many to choose from. Do you have a preference for internet or parking? Sentence12: Alright! How many people will be staying starting what day? Sentence13: There are 11 European style restaurants. What price ranges are you looking for? Sentence14: Yes, I would like it to have internet. Sentence15: That sounds perfect. Let's book it. Sentence16: There are 33 hotels to choose from. Can we narrow this down? Are you interested in a particular part of town or specific price range? Sentence17: Expensive price range. Please book it for 4 people at 18:15 on Monday Sentence18: Can you help me find some european food in Cambridge? Sentence19: How about price range? The hotel should also be very expensive. I won't settle for less and neither will Fi-Fi. Sentence20: I will be staying on Monday. Sentence21: Yes I will definitely need that. Sentence22: Great. If you need help in the future, please contact us. Enjoy your stay. Question: Who has spoken the sentence 16? (A) User (B) System
Example Output: Answer: (A) User

Example Input: 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
Example Output: Answer: (A) User

Example Input: Sentence1: There are 8 guesthouses with your preferences. Will you be needing internet or parking? Sentence2: Sure, I'd recommend the Royal Spice restaurant. Would you like to book a table? Sentence3: Sure thing! It is P4ZW4FGI . Sentence4: Great! I have a red honda picking you up. Your contact number is 07485551349. Is there anything else I can assist you with? Sentence5: Royal spice, please Sentence6: Yes that sounds great. There will be 4 of us and we'd like the table for 15:15 on Saturday, please. Sentence7: There are 22 results for Indian restaurants, do you have a particular price range in mind, or area you'd like to dine in? Sentence8: There will be 4 people checking in and staying two nights starting from the same day. I will also need a taxi to arrive at the restaurant ontime and the hotel. Sentence9: Ok great, can we get a taxi booked now? I need it to get me to the restaurant by the time we booked. Sentence10: Let's get your hotel booked and then we will do the taxi. I have you booked at Archway House on Saturday. Reference number is C1419C84 . Sentence11: Hi, I'll be traveling to Cambridge soon and would like to find a restaurant that serves Indian food. Sentence12: I think that will be all for now, thanks. Bye. Sentence13: We were able to book that table for you! Would you like your reference number? Sentence14: Yes, I do need that number, please. Sentence15: I'm glad help and hope you have a pleasant trip. Sentence16: I can try to get you a booking at Archway House. What day will you be checking in, how many will be staying, and for how many nights? Sentence17: yes both. reference number please? Sentence18: How about a cheap indian restaurant located in the north please. Sentence19: Where would you like to taxi to pick you up from? Sentence20: Great I also am looking for a place to stay that has a 4 star rating in the north part of town Question: Who has spoken the sentence 14? (A) User (B) System
Example Output:
Answer: (A) User