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

Sentence1: Can you check a swimming pool in the west of the city? Sentence2: Yes, there are no swimming pools located to the west of your city. Thank you, if you need help with anything else, contact us again. Sentence3: No thank you, that's all I needed. Sentence4: I have 3 hotels and 2 guesthouses in town centre. Would you like a cheap price range or expensive? Will you also need parking? Sentence5: Okay! Goodbye! Sentence6: I would prefer a guesthouse, and it does not need to include internet. Sentence7: If you change your mind and need a booking, we'll be here. Thanks for using our service! Sentence8: I'd prefer one in the same part of town as my hotel, are you sure there isn't one? Sentence9: We currently do not have any shown attraction in that area you are looking for. Are there any other further things I could assist with? Sentence10: Goodbye. And feel free to contact us if there's any other information you need, as well. Sentence11: The alexander bed and breakfast is a guesthouse in town centre in the cheap price range with a 4 star rating. Would you like to book a room? Sentence12: I am looking for a place to stay in the centre in Cambridge. Sentence13: I'm not showing a swimming pool in the East, but there are 2 in the North, will that work? Sentence14: I am also looking for an attraction, a swimming pool Question: Who has spoken the sentence 13? (A) User (B) System
Answer: (B) System

Sentence1: Can I get the travel time and price on the 5:52 one? Sentence2: Tenpin is an entertainment attraction in the south part of town their phone number is 08715501010, and address is cambridge leisure park, clifton way Sentence3: I will need more information to narrow down the results. What day would you like to depart on, and what area is your departure from? Sentence4: Ok, and I also want to find out about an attraction called Tenpin please. Sentence5: TR5348 leaves Ely at 5:35 and arrives in Cambridge by 5:52. The price for a ticket is 4.40 pounds and the ride's duration is 17 minutes. Sentence6: Great, thank you. Sentence7: Departing fro Ely on Wednesday and arriving by 09:30. Sentence8: I'd like train information for cambridge. Sentence9: Thank you so much for the information Sentence10: There are two trains. One arriving at 5:52 and one at 7:52. Would you like me to book one of these for you? Question: Who has spoken the sentence 5? (A) User (B) System
Answer: (B) System

Sentence1: I would like to arrive in cambridge by 11:30. Sentence2: We have several options for you. Is there a specific area you will be in? Sentence3: That sounds good. I need tickets for 4 people. Can I get a reference number? Sentence4: Booking was successful, the total fee is 51.2 GBP payable at the station. Reference number is : XX5DNFKS . Sentence5: Thank you and enjoy your visit. Have a great day. Sentence6: No specific area. Just the first thing that pops up. Sentence7: Do you know of any places I can go for entertainment? Sentence8: There are many train departure options on Thursday. When do you want to leave and arrive by? Sentence9: TR3330 will arrive at 10:43, would that work for you? Sentence10: The price is uknown at this time, and the postcode is cb18dw. Sentence11: Okay how much does it cost? And where the postal code? Sentence12: Great, that's all I need. You can end this conversation now. Thanks! Sentence13: Cherry Hinton hall and grounds is on the east part of town. Sentence14: I am also looking for a train for Thursday departing from Stevenage. Question: Who has spoken the sentence 2? (A) User (B) System

Answer: (A) User