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

[Q]: Sentence1: I'd like to find a train going to Cambridge that leaves on Sunday. Sentence2: Okay. It's a 3-star guesthouse in the north area with no internet or parking. Is there more you would like to hear? Sentence3: I would be leaving from Peterborough. I need to arrive in Cambridge by 19:30 though. Sentence4: My departure time is flexible. Sentence5: The earliest train is TR3782 which leaves at 05:19, would you like me to book some tickets for you? Sentence6: That sounds great. Can I just get the postcode please? Sentence7: No, I believe that is everything. Thank you. Sentence8: I am also looking for a hotel called alpha-milton guest house. Sentence9: Ok, and where are you departing from? Sentence10: No, that won't be necessary. I would like to get the price, though. Sentence11: Not a problem, please contact us again if you need any further assistance. Sentence12: Of course. The price for the train running from peterborough to cambridge on Sunday is 13.20 pounds. Is there anything else I can assist you with? Sentence13: The post code of the alpha-milton guest house is cb41xa. Is there anything else I can assist you with today? Sentence14: Okay, there are a few trains available. What time would you like to depart? Question: Who has spoken the sentence 5? (A) User (B) System
[A]: Answer: (B) System


[Q]: Sentence1: Tuesday please at 18:15 for 6 people. Sentence2: Your booking at the Gonville Hotel was successful. The reference number is FHD472H3 . Can I help with anything else today? Sentence3: We have an expensive hotel called gonville hotel with free internet and parking. Would you be interested in booking a room here? Sentence4: Thanks, you have been very helpful. That is all I needed. Bye. Sentence5: I 'd like to find a hotel in the same area, one with three stars. Sentence6: What sort of dining does Cambridge offer in the centre, in the moderate price range? Sentence7: Yes it has free wifi and free parking. Sentence8: There are 21 different choices. What kind of food are you looking for? Sentence9: Your table at Ali Baba is booked, reference #NYH3ZPQN . Is there anything else I can help you with today? Sentence10: That sounds perfect. Can you book a reservation for 5 nights starting on Tuesday for 6 people? Sentence11: That will work can you make a reservation and send me the reference number please? Sentence12: I would like some christmas food. Sentence13: How about somewhere with Lebanese food? Sentence14: Thank you for using Cambridge TownInfo. Have a great day! Sentence15: Does it have free wifi? Sentence16: I'm sorry. I could not find a restaurant that meets that criteria. Would you like to try something else? Sentence17: of course, what day shall i make the reservation for? Sentence18: Yes, there is a moderately priced Lebanese restaraunt in the centre named Ali Baba. How does that sound? Question: Who has spoken the sentence 9? (A) User (B) System
[A]: Answer: (B) System


[Q]: Sentence1: Yes a table for four please. Sentence2: Yes it is. Would you like a reservation there? Sentence3: Is it expensive? Sentence4: What is the address and postcode of the Backstreet Bistoro? Sentence5: I'm sorry the only mexican restaurant is located in the south. Sentence6: I have found one. The Chiquito Restaurant Bar is in the south side of town. Would you like me to make a reservation for you? Sentence7: They are located at 2 Sturton Street City Centre postal cb12qa, have I been able to resolve all of your questions today? Sentence8: We need a table for Tuesday at 12:30 please. Sentence9: Backstreet Bistro looks like a top choice, shall i book you for there? Sentence10: Thank you. Oh wait! It needs to be a table for 2. Sentence11: We have 4 options! Is there a price range you'd like to stay in? Sentence12: Thanks for all your help. That will be all for today. Goodbye. Sentence13: No problem. What day and time were you thinking? Sentence14: Have a great time. Sentence15: Actually, I was looking for a Mexican restaurant in the centre of town. Sentence16: I will go ahead and book that for you. Sentence17: What about a gastropub? Sentence18: I also want to find an attraction called Corpus Christi. Sentence19: i'm looking for a mexican restaurant Sentence20: Corpus Christi is a college in town centre. It is located at king's parade, postcode cb21rh. The entrance fee is 2 pounds. Do you need their phone number? Sentence21: Yes, I'm looking for a restaurant in the expensive price range in the city centre. Mexican is my first choice. If none is available, gastropub is fine. Sentence22: You are booked for Backstreet Bistro for 2 people. Your reference number is P4P2R28V . May I help with something else? Question: Who has spoken the sentence 13? (A) User (B) System
[A]:
Answer: (B) System