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

Sentence1: Yes try 15:30 on saturday and need a reference number thank you. Sentence2: I'd be happy to help you find something. Are you looking for something in town centre? There are cinemas, colleges, concert halls just to name a few. Sentence3: I'd love to try a local restaurant Sentence4: Just do what I say! I don't care what you choose! Give me the necessary information too. Then, get me a restaurant in the east that's expensive north indian food Sentence5: How about expensive restaurants that serve Indian food in the same area? Sentence6: Booking was successful. The table will be reserved for 15 minutes. Reference number is : MKRUJ1BR . Is there anything else I can do for you? Sentence7: I apologize but I was not able to book for that time. Would you like me to try another time slot? Sentence8: Try the Cambridge Museum of Technology which is a museum. The entrance fee is 5 pounds and postcode is cb58ld. There are no expensive North Indian restaurants in the east. Sentence9: First, I need an attraction in the east. Can you choose one and get me the entrance fee, postcode, and attraction type? Then I'd like an expensive restaurant in the east. Sentence10: I'm sorry, that's a lot of information for just one response. There are 10 attractions in the east - do you care what sort? Sentence11: We are happy to help. Thank you for using our service. Have a great day! Sentence12: I want the Pipasha for 1 at 16:30 on Saturday. Sentence13: We have many restaurants in town. What type of cuisine are you looking for, and what's your budget like? Sentence14: For expensive restaurants with Indian food, we have Pipasha, and the Sitar Tandoori. Sentence15: Great! That is everything I needed. Thank you! Sentence16: I'm looking for someplace to go in town. Question: Who has spoken the sentence 3? (A) User (B) System
Answer: (B) System

Sentence1: I can definitely help you out with that. Is there a certain area of town you'd like to stay in? Sentence2: I have booked your stay at the Alexander Bed and Breakfast for Friday for 3 days for 6 people. Your reference number is DJF36WMD . Is there anything else I can help you with today. Sentence3: The train ID is TR9629, leaving at 18:09 and arriving by 19:54. Can you tell me how many tickets you would like to purchase? Sentence4: I'd like one ticket please. Sentence5: I will need to take a train from Leicester on the same day as my hotel booking. Sentence6: I am looking for a cheap hotel with free parking. Sentence7: All trips from leicester cost 37.8 pounds and take 105 minutes. Is there a specific time you would like to depart or arrive by? Sentence8: Alexander bed and breakfast is a guesthouse in town centre in the cheap price range. It has both free parking and wifi. Would you like to book a room? Sentence9: We will be arriving on Friday and staying 3 nights. Sentence10: I will need to know how many nights and what day you will be starting your stay before we finish the booking. Sentence11: I do not. I just need the train ID and what arrival time it has. Sentence12: Alright I've booked you one ticket, the total will be 37.79 and your reference number is PGY0G1J2 . How else can I help you? Sentence13: Sure, you need a taxi to Alexander Bed and Breakfast from where, and do you have an arrival time request? Sentence14: Can you please schedule a taxi to take me from the station to my hotel? Sentence15: Thank you for your help. Sentence16: I need to leave after 17:45 heading for Cambridge. Go ahead and book the closest time and give me the train ID and arrival time. Sentence17: The train arrives by 19:54 and TR9629 is the train id. Sentence18: Is there anything else I can help you with? Possibly entertainment or places to visit on your trip? Sentence19: I would prefer to be in the centre of town, and I need the hotel to include free parking. Sentence20: Yes, please. That sounds perfect. There will be six of us. Question: Who has spoken the sentence 12? (A) User (B) System
Answer: (A) User

Sentence1: Churchill college is a college in the west. The phone number is 01223336233. The postcode is cb30ds. Can I help with anything else? Sentence2: Well what about helping me find something to visit in Cambridge? What is there to do on the west side? Sentence3: Yes. The guesthouse must include free parking and free wifi. Sentence4: You could always visit Churchill College. Sentence5: Oh dear. Can you try one more time? Moderate guest house, free wifi and parking, for 1 night, Friday, 4 people? I really need this room. Sentence6: Do you have any hotels with free wi-fi and parking in the moderate price range? Sentence7: I'm sorry, I have tried the Hobsons House and The acorn guest house for 3 nights. Could you possibly book a different day to check in? Sentence8: Could you help me find a moderately priced guesthouse? Sentence9: I'm sorry but the booking was unsuccessful. Would you like to book another day or for a shorter stay? Sentence10: You're welcome, please enjoy your visit to Cambridge. Sentence11: Lovell lodge does not have availability on Friday either. Would you like to try another guesthouse? Does the area matter? We could try kirkwood house, it is in the north. Sentence12: I'm sorry, but it's not available. Sentence13: Could you tell me if it is available for one night? Sentence14: I am sorry but the Carolina Bed and Breakfast is not available for one night either, may I check another guesthouse for you? Sentence15: I apologize for the trouble earlier. I managed to find you a guesthouse called The Hamilton Lodge and made a successful reservation. The reference number is EL0WI0ZV . Sentence16: Yes it will. Please book it for 4 people staying 3 night starting on Friday. Sentence17: I found 15 do you have any other requirements to help narrow it down? Sentence18: Sorry, I tried all 12 of the avaialble places with those requirements and there is no availability. Sentence19: Are there any other hotels available? Sentence20: That would be fine with me Sentence21: Yes. i have the Ashley North and the Lovell Lodge. Do you have a preference? Sentence22: Carolina bed and breakfast has free parking and internet. It is located in the east with a moderate price range. Will this suit your needs? Sentence23: Oh, thank goodness. I was getting worried. Can you recommend any fun things to do in the west side of town? Sentence24: No, that's all I need today. You have been very helpful. Thanks! Sentence25: Yes, please find another moderate guesthouse with free parking and wifi to book. Sentence26: Okay, what kind of attraction is that? May I have their postcode and phone number please? Sentence27: How about we try the Lovell Lodge, if that's okay? Sentence28: Hmmm ... let's try booking the Acorn Guesthouse for 1 night? 4 people, arriving Friday. Question: Who has spoken the sentence 25? (A) User (B) System

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Answer: (B) System

