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

[Q]: Sentence1: I am also looking for a place to stay at a 4 star hotel near the restaurant. Sentence2: I was able to book a room for 5 people, 5 nights. Your reference # is 5DD52JOS . Can I help you with anything else today? Sentence3: I prefer something cheap. Sentence4: Yes, for 5 nights on the same day. I also need the reference number. Thanks! Sentence5: Lets go with charlie chan, I would like to to book a table for 5 people at 11:00 on wednesday. Sentence6: Okay, have a great day! Sentence7: Need a place to dine, chinese near centre. Sentence8: The Alexander Bed and Breakfast is cheap, would you like to book it? Sentence9: There are three options, charlie chan, rice house and golden house. Can I book you for one of those? Sentence10: Are either option cheap? Sentence11: There are two located in the same area. alexander bed and breakfast and university arms hotel? Sentence12: I think that is all I need today. Thank you for all your help. Sentence13: I have 10 places. Would you like a certain price range? Sentence14: Your booking was successful, the reference number is B1FIKA09 . Question: Who has spoken the sentence 3? (A) User (B) System
[A]: Answer: (B) System

[Q]: Sentence1: Yes, can I get a table for 4 on saturday at 15:15? Sentence2: Hi! Can you help me find a particular restaurant? Sentence3: unfortunately they are filled up for that time would you like me to reserve another time or would you like to choose another restaurant. Sentence4: Of course, there are 110 restaurants in town. Would you like me to search by restaurant name? Sentence5: The Varsity Restaurant serves international food in the center of town. Do you want me to book it for you? Sentence6: Excellent. I'll need the reference number. Sentence7: Yes, I am looking for the Varsity Restaurant. Sentence8: Yes, I will book a table for 4 on Saturday at 15:15. Question: Who has spoken the sentence 2? (A) User (B) System
[A]: Answer: (A) User

[Q]: Sentence1: That sounds great, thanks for all of your help. I won't be needing anything else. Bye. Sentence2: Can I get the phone number and the entrance fee then? Sentence3: You're welcome, have a great day. Sentence4: The phone number for La Margherita is 01223315232 and they're located at 15 Magdalene Street City Center. Would you like me to make a reservation for you? Sentence5: Hi I am looking for a cheap place to dine serving Italian food Sentence6: Yes can I have the phone number? Sentence7: Absolutely! Would you like me to search for one in the same area? Sentence8: The area doesn't matter to me. Sentence9: Can you book it for me and get a reference number ? Sentence10: You have a few options for italian dining. What area of town would you prefer? Sentence11: I am sorry but you cannot book a museum but I can provide you with information about it. Sentence12: La Margherita serves Italian food in your price range. It's located in the west. Would you like additional information on this restaurant? Sentence13: how about byard art? it's phone number is 01223464646 and the entrance fee is free. Sentence14: Not at the moment. However, I am also looking for a museum. Can you assist me with that? Question: Who has spoken the sentence 6? (A) User (B) System
[A]:
Answer: (A) User