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

[Q]: Sentence1: I'm looking for an expensive restaurant in the center of town. Sentence2: Certainly. When would you like your taxi to depart? Sentence3: Is there any Turkish cuisine? If so I need the postcode and the address. Sentence4: No, that will be all, thank you! Sentence5: I need to arrive at Cambridge Contemporary Art by 19:15 please. Sentence6: Okay, have a nice day. Sentence7: I don't really care, what do you recommend? I will need the postcode and entrance fee please. Sentence8: I am also looking for museums in the area. Sentence9: How about Cambridge Contemporary Art? The entrance is free and the postcode is cb21su. Enjoy! Sentence10: There are many museums listed in the centre area, what kind of museum are you interested in? Sentence11: No problem. Your taxi has been reserved. Your driver's contact number is 07035811281 and will be driving a grey toyota. Is there anything else you need today? Sentence12: Thank you. I would also like a taxi to commute between the two places. Sentence13: There are many expensive restaurants in the centre of town, is there a specific type of food you would like? Sentence14: The Meze Bar restaurant matches your tastes. It is located at 196 Mill Road City Centre. The postcode is cb13nf. Question: Who has spoken the sentence 10? (A) User (B) System
[A]: Answer: (A) User

[Q]: Sentence1: Does it have internet? Sentence2: I can help you with that I just need to know what time you'd like to be picked up from the guesthouse? Sentence3: No, that is it. Thank you so much. Sentence4: I have 3 great guesthouses in the east. I recommend Warkworth House. Would you like to book a room? Sentence5: The Yu Garden is a Chinese restaurant in the East, would you like to book a table? Sentence6: How about a Chinese restaurant? Sentence7: There are no australasian restaurants in the east. Would you like to try a different cuisine or can I check another area for you? Sentence8: Can i get the address and number to Yu Garden? Sentence9: I'm happy to be of service, and thank you for using the Cambridge TownInfo Centre! Sentence10: I would like to leave at 5:45. Sentence11: Yes it does. Would you like to make reservations? Sentence12: Hi, I am looking for a nice moderately priced hotel located in the east. Sentence13: Okay, thanks. I'm also looking for a place to eat that serves Australasian food. Can you help me with that? Sentence14: Warkworth does offer internet. Sentence15: Yes, the address is 529 Newmarket Road Fen Ditton and the postcode is cb58pa. Sentence16: The taxi will pick you up at the guesthouse at 05:45 and will be in a white lexus. Their contact number is 07730745339. Is there anything else I can help you with? Sentence17: Thank you. I also need a taxi to get between the two places. Sentence18: Maybe. Does it have 4 stars? Question: Who has spoken the sentence 3? (A) User (B) System
[A]: Answer: (B) System

[Q]: Sentence1: Their phone number is 01223334860. Can I help you with anything else? Sentence2: I would also like to visit an attraction. I would like to find a college in the centre. Sentence3: The price doesn't matter to me. I'll be looking for places to visit in the centre, so if one is located there, that's fine. Sentence4: There are 19 hotels available in the 4 star range. Is there a specific area or price you would like? Sentence5: That is all, thank you. Sentence6: Might I recommend Downing College which has free admission and is located on Regent Street with postcode cb21dq. Sentence7: I am looking for a hotel in cambridge that includes free parking and wifi can you help? Sentence8: The cheap one is fine. Book it for 4 people for 4 nights starting Tuesday Sentence9: Okay, I have a cheap guesthouse in the center, and and expensive hotel as well. They both have 4 stars, which one sounds best? Sentence10: I have successfully booked a 4 night stay at the alexander bed and breakfast, your reference number is 8BHSGT90 . Sentence11: How about ones with four stars as well? Does that narrow it down any more? Sentence12: Would you like for me to search for something else. Sentence13: Could you get me a phone number for Downing College please? Sentence14: I am sorry but I need more information from you. Which area and pricerange do you prefer? Sentence15: Not really, just select one and book it for four people staying four nights froms Tuesday. Sentence16: There are 29 options. Would you like a recommendation, or do you wish to narrow the search? Question: Who has spoken the sentence 2? (A) User (B) System
[A]:
Answer: (A) User