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

[EX Q]: Sentence1: If you can go ahead and recommend one and provide me with the phone number and address please. Thanks so much. Sentence2: I would like to book a train to Leicester that leaves on Saturday. Sentence3: That's all for today. Thank you for your help! Sentence4: Would you like to book a seat on TR1832? It will leave at 15:21 and arrive at 17:06, 105 minutes later. It will cost 30.24 pounds. Sentence5: sure, there are several in that area. including art galleries and history museums. Sentence6: Yes, do you have a certain time you'd like to leave or arrive by? Sentence7: broughton house gallery is located at 98 King Street and their phone number is 01223314960. Do you need anything else? Sentence8: Thank you for calling today. Sentence9: I'd like to leave after 15:15 please. Sentence10: In the centre, please Sentence11: Booking was successful, the total fee is 30.24 GBP payable at the station. Your reference number is VHWYUF80 Sentence12: What area are you interested in? Sentence13: i also want to check out some museums while i'm in town. Sentence14: Yes, can you please book that for me and send me a reference number. Thank you Question: Who has spoken the sentence 12? (A) User (B) System
[EX A]: Answer: (A) User

[EX Q]: Sentence1: We have many hotels that fit your needs, is there a specific area you're looking at? Sentence2: We have TR2475 that leaves cambridge at 07:50 and arrives ely by 08:07. Will that work for you? Sentence3: It's in the north area and they do have parking. Sentence4: Thanks, that's all i need! Sentence5: Are you sure you don't need me to book your hotel for you? Sentence6: Do they have free parking? What area is it located? Sentence7: Acorn guest house fits your needs. Would you like me to book your stay? Sentence8: something that has free wifi Sentence9: I need to find a guesthouse with a moderate price range. Any places to stay? Sentence10: That has been booked. Reference number is : FSUGM4NQ . Sentence11: Can you help with transit information? I need to go to ely by train on Sunday and need to arrive by 09:00 departing cambridge. Sentence12: Yes, that sounds perfect. Can you purchase 7 tickets for me please? Sentence13: Excellent. I also need a train to ely. Sentence14: No problem. Good bye! Question: Who has spoken the sentence 10? (A) User (B) System
[EX A]: Answer: (A) User

[EX Q]: Sentence1: No, I'm sorry, there are no Sri Lankan restaurants in the moderate or the expensive price range. Can I help you find something else? Sentence2: Yes, please try a different restaurant in the same area and price range. Sentence3: Okay great! Enjoy your lunch. Sentence4: Could you help me find a restaurant that's moderately priced, and services sri lankan cuisine? Sentence5: Nope, that should do it! Thanks! Sentence6: I'm sorry, I was unable to book the restaurant. Would you like to try a different restaurant? Sentence7: Yes, is there another restaurant serving lebanese food that you can recommend? Sentence8: I was able to book you at the oak bistro. your reference number is 11WH7X3K . Is there anything else I can help you with? Sentence9: I'm sorry, I don't see any moderately priced sri lankan restaurants. Would you like to try another sort of cuisine? Sentence10: Yes. Ali baba serves lebanese. May I book a table for you? Sentence11: yes see if there is booking for 6 people at 11:15 on thursday. Sentence12: Yes, are there are restaurants with lebanese cuisine? Sentence13: No I am sorry the ali baba is the only one. Another place maybe? Sentence14: Do you have a moderately priced restaurant serving lebanese food? Question: Who has spoken the sentence 5? (A) User (B) System
[EX A]:
Answer: (B) System