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

Input: Consider Input: Sentence1: Thats all for today! Thanks so much! Sentence2: TR1039 departs from Ely at 13:35, arriving in Cambridge by 13:52. Does this work for you? Sentence3: Sounds great, can you book it for 7 people for 4 nights starting saturday? Sentence4: The location doesn't matter, but I'd like it to be 4 stars. Sentence5: Thank you I also need to find a cheap guesthouse to stay at. Can you help me find one? Sentence6: Hi, I'm looking for a train going to Ely from Cambridge. Sentence7: Have a nice day. Sentence8: Okay! How about Allenbell? Sentence9: That sounds great. I would like to book it for 7 people. I will also need the reference number Sentence10: You have 9 options available. Would you like to narrow it down by location? Sentence11: Your room has been booked. Your reference number is ELA3CIDM . Sentence12: There are 70 possible trips. You can leave as early as 5:35 and as late as 23:35. The trip is 17 minutes. What time of day would you prefer? Sentence13: I need to leave on Wednesday after 12:00 please. Sentence14: Booking was successful, the total fee is 35.2 GBP payable at the station .Reference number is : JD1P380X . Question: Who has spoken the sentence 5? (A) User (B) System

Output: Answer: (B) System

Input: Consider Input: Sentence1: No, I'm actually looking for something in the north. Is there anything available there please? Sentence2: I've made the reservations for you. The reference number is NFKR3VXL . Sentence3: Hi, few questions. I am looking for a restaurant called the Little Seoul. Also, could you give me the phone numbers, address, and entrance fees for both those places? Sentence4: ok I have a black volvo booked for you Sentence5: Ok, thanks. Can you reserve the restaurant for me for 5 people at 14:30 on Sunday? Sentence6: Can I please get the taxi company's phone number in case I need it? Sentence7: you can reach them on 07704971911 Sentence8: Abbey pool and astroturf pitch is in the east part of town if that would work for you? Sentence9: Sure! Let me get the pool information first. I found one that is an outdoor pool and one that is a learner pool. Which would you prefer? Sentence10: The outdoor pool would be best. For the restaurant I need to reserve it for 5 people at 14:30 on sunday. Please give me the reference number of the reservation. Sentence11: Yes I need a taxi to get from the pool to the restaurant. Sentence12: You are welcome. Can I assist you with anything else? Sentence13: I'm looking to swim today. Is there anywhere I can go? Sentence14: the outdoor pool is called jesus green outdoor pool located at between victoria road and the river cb43px Sentence15: enjoy your time in Cambridge! Sentence16: Thank you so much for your help. Sentence17: Sure, there are two in the north. Would you like their information? Sentence18: Thank you. That was all I needed. Goodbye. Question: Who has spoken the sentence 1? (A) User (B) System

Output: Answer: (B) System

Input: Consider Input: Sentence1: Sure. The Cambridge and County Folk Museum is one of the oldest social history museums in the UK and offers a various and unique collection of artifacts. Sentence2: their address is 2-3 castle street and their entrance fee is 3.50 pounds. Sentence3: Okay I will work on getting this done and get back to you. Sentence4: I am planning a trip to see the Cambridge and County Folk Museum. What can you tell me about it? Sentence5: Thank you for calling. Enjoy your trip! Goodbye! Sentence6: 3 people at 20:00 on teusday Sentence7: Your taxi booking was successful. You will be picked up by a white audi. The contact number is 07915378958. Anything else I can do for you today? Sentence8: Thank you. I will also need the reference number, please. Sentence9: There are four places to choose from. They range from cheap to expensive. Do you have a preference on the price range? Sentence10: I'd be happy to! How many people and for what time would you like to dine? Sentence11: de luca cucina and bar would fit your needs. they are located at 83 Regent Street, phone 01223356666, cb21aw. Would you like me to book reservations for you? Sentence12: Your table has been booked. The table will be reserved for 15 minutes. Your reference number is : 0Z5IJB27 . Can I be of any further assistance? Sentence13: Thank you so much for your time today. I appreciate your help! Goodbye! Sentence14: I would prefer something in the moderate range. Sentence15: I would like their entrance fee and address please. Sentence16: Yes, make a reservation for Tuesday please Sentence17: Great, thanks! Could you also help me find a modern European restaurant in the centre? Sentence18: Yes, I will need a taxi from the museum to the restaurant to arrive by 20:00 on Tuesday. Can you book that for me? Question: Who has spoken the sentence 4? (A) User (B) System
Output: Answer: (A) User