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

Example Input: Sentence1: The phone number is 01223420060 and the post code is cb46az. Sentence2: Ok. I booked four tickets for you. Your reference number is FRSZ5A8R . Can I help you with something else? Sentence3: Yes. Book for 4 people. Sentence4: I would like the phone number and postcode for it please. Sentence5: What information are you looking for? Sentence6: Sounds great, before i let you go, I just want to make sure we have covered everything that you need. Sentence7: yes you did Sentence8: TR6806 will leave at 10:01 and arrive at 11:01. The trip will take 60 minutes and it will cost 17.90 pounds. Would you like to book? Sentence9: Thank you! That's all I needed, thanks so much. Sentence10: enjoy your stay in Cambridge! Sentence11: I'm going from cambridge to broxbourne any time after 09:15. Sentence12: I show 404 rail departures on Thursday, can I get something specific for you? Sentence13: I want a train leaving on thursday. Sentence14: Im also looking for a place by the name of milton county park. Question: Who has spoken the sentence 4? (A) User (B) System
Example Output: Answer: (A) User

Example Input: Sentence1: I'd like to find a panasian restaurant in the centre of town please. Sentence2: Can I have the phone number, address and postcode? Sentence3: Tang Chinese is listed at expensive. Would you like more information? Sentence4: Yes, the address is Napier Street City Centre, the postcode is cb11hr, and the phone number is 01223357187. Sentence5: No, I don't care about the price. Which one looks good? Sentence6: That's all I needed today, thank you. Sentence7: Unfortunately, I was not able to locate a panasian restaurant in that area. Would you like me to look in another area or for a different type of restaurant? Sentence8: Great choice! We have 10 restaurants in that area. Do you have a preference on price? Sentence9: Oh no. Well I'll take chinese food then. Sentence10: Enjoy your meal, let me know if I can help with any thing else. Question: Who has spoken the sentence 9? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: Thanks for your help! Sentence2: You're welcome. Please let me know if you need anything else. Sentence3: We have 5 parks! What area would you like to be in? Sentence4: Cherry Hinton Water Play is located in the east. The address is Cherry Hinton Hall, Cherry Hinton Road. Anything else I can do for you? Sentence5: I have three 4 star hotels in my system. Would you prefer a cheap or expensive one? Also is there any other criteria you are looking for ? Sentence6: No, unfortunately. Please consider other areas. Sentence7: I would need the area and address, please. Sentence8: I don't care about the area. Can you suggest one? Sentence9: Cherry hinton water play is popular. What info would you like on it? Sentence10: You are all booked. Your reference number is 4U7RJ8M6 . Thank you. Sentence11: That sounds lovely. Please book that for 6 people for 5 nights starting Saturday. Sentence12: I am coming to visit cambridge. Would you happen to be able to find me a park to go to? Sentence13: Yes. Can you help me find a hotel? A nice 4-star place, if that's possible. Sentence14: How about guesthouse style places? Are there any of those available? Sentence15: Sure thing! I have two, may I recommend Rosa's Bed and Breakfast? It's in south, is cheap, and has four stars. Sentence16: Do you have a hotel that is in the south with free parking? Question: Who has spoken the sentence 3? (A) User (B) System
Example Output:
Answer: (B) System