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

[EX Q]: Sentence1: I'd like to dine in the center of town, please. Sentence2: Could you give me the address and phone number for the Slug and Lettuce please. Sentence3: I'm looking for a place to dine that serves gastropub food. I want it to be expensive. Sentence4: You're quite welcome! Thanks for contacting the Cambridge TownInfo Centre and have a great day! Sentence5: The slug and lettuce is located at 34 - 35 Green Street, postcode cb23ju. I'm sorry our system does not list their phone number. Is there anything else? Sentence6: I have two in the centre, the Backstreet bistro and The Slug and Lettuce. Would you like for me to make you a reservation? Sentence7: I wish you could provide their phone number. But other than that you've given me everything I need to know. Thank you goodbye. Sentence8: We have 3 options in Cambridge for expensive gastropub food. Would you prefer a place in the centre or in the east? Question: Who has spoken the sentence 3? (A) User (B) System
[EX A]: Answer: (B) System

[EX Q]: Sentence1: No I don't. Pick any of the 33 and give me the address and area, please. Sentence2: I have 33 entries that match your request. Do you have a star rating preference? Sentence3: Yes, what time does that train leave? Sentence4: The alexander bed and breakfast is a cheap 4-star guesthouse in the center, how does that sound? Sentence5: I don't need any specific area, just need a guesthouse that is cheap and includes free parking. Sentence6: Perfect. Thank you. That's all the information I need for Cambridge. You have been a great help! Sentence7: I need to find a Train leaving on Friday from London Liverpool Street and arriving in Cambridge. Sentence8: The TR5015 will get you there by 15:07. Would you like me to book you some seats? Sentence9: I have 10 trains as options. Do you have a time you want to leave or arrive by? Sentence10: Can you tell me what area it's in? And can you give me an address? Sentence11: Please book it for me.I also need a place to stay,a guesthouse with free parking ? Sentence12: The travel time is 88 minutes. Can I help you with anything else? Sentence13: Yes I'd like to arrive in Cambridge by 15:15. Sentence14: We hope you enjoy your stay. Goodbye. Sentence15: No thank you, may I please get the travel time of TR5015? Sentence16: Sure. What area would you like to stay in? Sentence17: Alexander bed and breakfast in found in the center of the town. Their address is 56 saint barnabas road. Sentence18: Thank you, I'm also looking for a place to stay. Can you help me find someplace? Sentence19: It would depart at 13:39 and arrive in Cambridge at 15:07. Sentence20: I have booked the train for you. The reference number is JN7FFTTY . Question: Who has spoken the sentence 5? (A) User (B) System
[EX A]: Answer: (B) System

[EX Q]: Sentence1: Does not matter but I do need free wifi and and a star of 0. Sentence2: Nope. That's all. Bye, thanks. Sentence3: I'll be arriving on Saturday and staying 3 nights. Sentence4: You're in luck, I have 9 guest houses available in the cheaper price range. What area of town would you like to stay in? Sentence5: The first train after 12:15 is TR5108 which leaves at 13:29, does that work for you? Sentence6: Thanks for calling Cambridge Town Info Centre. Have a great day. Goodbye. Sentence7: Your reference number is IREQ1EKT . Is there anything else I can help you with today? Sentence8: There are two guesthouses that meet your needs: city centre north b and b in the north and el shaddai in the centre. Would you like to book one of these? Sentence9: No problem, the fee is 64.64 and reference number is B5JCS4TL . Sentence10: Sounds perfect. Please book me enough tickets for the same group of people. Thanks Sentence11: There will be four people. Sentence12: I also need a train. It should leave Bishops stortford after 12:15, going to cambridge on saturday. Sentence13: Your train tickets are all booked! Your reference number is KOOYDYFY . Is there anything else I can help you with? Sentence14: I'm looking for a guesthouse to stay in that is cheap. Can you help me with that? Sentence15: Can we increase the amount of people to 8? Sentence16: I think that is it, got bookings for hotel and train. Sentence17: How many people are in your party and when will you be staying? Sentence18: And how many nights will you be staying? And what day are you arriving? Sentence19: North B and B sounds nice. Could you book this for me? Sentence20: Would you like me to look up anything else for you today? Question: Who has spoken the sentence 1? (A) User (B) System
[EX A]:

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

