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

Sentence1: They are all moderately priced, but Avalon has free internet and four stars. Would that suit you? Sentence2: Yes, free wifi. No free parking though. Sentence3: That sounds good. Do they have wifi? Sentence4: Your table has been booked. The reference number is 3FOO64PM . Sentence5: Thank you I am also looking for a restaurant in the same area as the hotel serving expensive chinese food. Sentence6: please contact us again in the future. goodbye. Sentence7: There is Hakka located at Milton Road Chesterton would you like me to reserve it for you? Sentence8: I have three guesthouses to choose from. Do you mind they are in the north? Sentence9: I'm looking for a guesthouse to stay in and I don't need a free parking. Sentence10: 01223315702 and cb12dp. Sentence11: Perfect thats all I needed! Sentence12: This one is in the north a and b guest house Sentence13: Are there any moderately priced 3 star guesthouses in the west available? If not in the west, what about the north? Sentence14: Yes please. I need it for 8 people on Wednesday at 19:15. Sentence15: That's fine. Could I get their postcode and phone number? Sentence16: No that is okay, can you book the cheapest one for me please? Question: Who has spoken the sentence 2? (A) User (B) System
Answer: (A) User

Sentence1: Not a problem and thank you for choosing Cambridge TownInfo Centre Sentence2: Yes I have locations on the east, north and city center. Any preference for location? Sentence3: Thank you very much for helping me today! Sentence4: We can certainly help with that. Are you heading to the boat or to the hotel, and what time do you need the taxi? Sentence5: Gonville Hotel is a three star hotel with parking and is in the centre area. Does this sound good? Sentence6: Yes, I also need to get a taxi to go between them, please. Sentence7: I'd be happy to make that reservation for you. What days would you like to stay there, and how many are in your party? Sentence8: I would like a three star hotel, do not care about price. Sentence9: Great! I also need a hotel while I am there. I do need free parking but internet is optional. Sentence10: I am looking for a place to get a boat. Can you help me? Sentence11: Alright. There are a total of 29 hotels and guesthouses available. Is there a certain price range or area you wish? Sentence12: Yes that sounds fine. I would like to book a reservation please. Sentence13: I was able to get a red volvo for you phone number 07586716905 Sentence14: Can you make that for starting monday, 4 nights and 7 people? Sentence15: I need to leave the hotel by 5:00. Sentence16: The booking was successful! Your reference number is UR6L3NLS . Anything else I can help with? Sentence17: No problem. There is the Riverboar Georgina which is located in the north side of town. The address is Cambridge Passenger Cruises, Jubilee House and the postcode is cb43ax. Sentence18: No, I don't have any preference. You can just pick whichever one looks best and give me the phone number, address, and area. Question: Who has spoken the sentence 14? (A) User (B) System
Answer: (A) User

Sentence1: Your table has been booked. Your reference number is LPQVDDE9 . Sentence2: Yes, please. I need to book 3 nights starting on Friday for 5 people. Sentence3: I am glad I could help you with lodging and dining from the Cambridge TownInfo centre. Good bye. Sentence4: Yes, please. I need reservations for 12:30 on Friday. There are 5 in my group. Sentence5: surprise me what is the best choice ? Sentence6: Saigon city is Asian oriental and is in the north as the hotel is. It is expensive. Shall I book it for you? Sentence7: I don't care about the price. Sentence8: Hi, I am looking for a nice hotel to stay in. I would like it to include free parking. Internet access is not necessary. Sentence9: acorn guest house is a 4 star hotel located north of cambridge would you like to reserve? Sentence10: i have many. will you please state the price? Sentence11: Yes, please give me reference number. Sentence12: That is all. Thank you. Sentence13: Will you be needing a reference number? Sentence14: Do they have internet? Sentence15: What food type are you interested in? Sentence16: Yes it does. Shall I book it? Sentence17: I'd also like a recommendation for a restaurant in the same area as the hotel. Sentence18: Booking was successful. Reference number is : 7OLQYP67 . What else can I assist you with today? Question: Who has spoken the sentence 15? (A) User (B) System

Answer: (B) System