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

[Q]: Sentence1: Booking was successful for the bridge guest house. Your Reference number is : LBEOV690 . Sentence2: Yes please. Which is the cheapest? Sentence3: Thank you. Have a nice day. Sentence4: No. I would like to make a reservation for Wednesday for 3 nights and 8 people. I will also require a reference number. Sentence5: I was unable to book your stay at any of the three hotels. Would you like to change the length of your stay or change the day? Sentence6: There are 2 hotels with a 3 star rating and free parking. Would you like to stay in the centre or south? Sentence7: Sorry, I was mistaken. There are 3 guesthouses matching your request. One each in the south, north, and west. Would you like to book one? Sentence8: Thank you. Have a nice day. Sentence9: Can you please try a 2 day stay. Sentence10: I can only tell you they are all in the moderate price range. Do you have any other preferences? Sentence11: I am looking for a hotel with a 3 star rating and free parking Sentence12: Either is fine. I'd like a guesthouse. Question: Who has spoken the sentence 5? (A) User (B) System
[A]: Answer: (B) System


[Q]: 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
[A]: Answer: (A) User


[Q]: Sentence1: i found it, what info would you like? Sentence2: that's it! thaaaanks! Sentence3: architecture, anything else for you today? Sentence4: The entrance fee is 2 pounds. The phone number is 01223350914. Is there anything else I can help you with today? Sentence5: I would like the entrance fee and phone number. Sentence6: Yes what is the attraction type? Sentence7: I would like a reservation for 1 person on sunday at 15:00. Sentence8: I think you should go to the Great Saint Mary's Church, would you like any info on them? Sentence9: Booking was successful. The table will be reserved for 15 minutes. Reference number is : D78P3BKQ . Sentence10: Can you find a restaurant called Panahar? Sentence11: Alright, have a great time. Good bye. Sentence12: i also want a place to go in the centre. Question: Who has spoken the sentence 3? (A) User (B) System
[A]:
Answer: (B) System