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

Example Input: 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
Example Output: Answer: (B) System

Example Input: Sentence1: Yes, I am also looking for places to go in town while we are visiting the area. Do you have anything of concert halls around the area? We love those. Sentence2: Yes, please, what is the phone number? Sentence3: I have that all booked for your stay. Your reference number for the room is ZUG88XKL . Is there anything else I can help you with? Sentence4: I am looking for a place to stay. It should be in a moderate price range and should be a star of 3. Sentence5: The phone number is 01223474144. Sentence6: Yes, I need a booking for 8 people for 5 nights starting Monday. Please include the reference number for the booking. Sentence7: Also the address to the man on the moon is 2 Norfolk Street. You have to call to inquire about the entrance fee. Have a Great day. Sentence8: We have one. The Man on The Moon. But it is located in the centre area of town. Would you like more information? Sentence9: Ok, perfect. Thanks! Sentence10: i have four results that match your request, do you need internet? Sentence11: I have the Hobsons House. It is a moderately priced guesthouse located in the west. Free wifi and internet. Can I assist you in booking a room? Sentence12: Internet is not necessary. But can you see if there is one in the west part of town and I would prefer a guesthouse. Question: Who has spoken the sentence 10? (A) User (B) System
Example Output: Answer: (A) User

Example Input: Sentence1: I recommend the Golden Wok located at 181 Histon Road Chesterton, post code cb43hl, and their phone number is 01223350688. Sentence2: I can assist, where will you be coming from and do you have a time preference? Sentence3: I need a train on wednesday to try some of the local restaurants in cambridge. Sentence4: Great! Can you also find me a moderately-priced restaurant on the north side of town? Sentence5: I have listings for 2 both in the north of town. Sentence6: How much are the tickets? Sentence7: Can you give me a phone number and post code for whichever one you like the best? Sentence8: I am departing from London Kings Cross and need to arrive by 16:30. Sentence9: The earliest that I can get would be an arrival time at 14:08. How many tickets please? Sentence10: Thank you , that will do it . I appreciate the help. Sentence11: The reference number is F2ODHQYM . Sentence12: Each ticket is 23.60 pounds. Sentence13: You're so welcome. Have a nice day! Goodbye! Sentence14: Please book it for 1 person please. Question: Who has spoken the sentence 12? (A) User (B) System
Example Output:
Answer: (A) User