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

Example Input: Sentence1: Yes, book me for Sunday departing from london kings cross. Sentence2: Your booking is successful. Train is leaving at 07:17 and it costs 151.04 GBP. Your reference number is 5Y7XKAJY . Anything else I can help with? Sentence3: I need a not later than 9:15 train to Cambridge. Sentence4: 8, please Sentence5: How many tickets will you require? Sentence6: It looks like there's a train for Cambridge with an arrival time of 07:07. Would you like me to book that for you? Sentence7: Okay thank you for calling. Don't hesitate to call us again. Sentence8: No thank you that's I need! Question: Who has spoken the sentence 3? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: Yes please. Please make sure the restaurant has a table available for booking for seven people on sunday at 13:15. Sentence2: Glad to be of service! Goodbye! Sentence3: I would really like to get really great Chinese food. Can you suggest an expensive chinese place? Sentence4: Yes! There are 5 that I have found. One in the East, 2 South, 1 North and 1 Centre. Would you like the address of any of them? Sentence5: I have 4 swimming pools to choose from. 2 are in the north, and I have one in the east and centre. Do you have a preference? Sentence6: I don't have a area of town preference. Sentence7: Sure! Abbey Pool and Astroturf Pitch is at Pool Way, Whitehill Road, off Newmarket Road. Would you like the phone number? Sentence8: What type of food. Sentence9: Hey I am looking for a swimming pool to go to while in Cambridge. Can you find me one Sentence10: Great that's all I needed. Thanks for your help. Bye. Sentence11: naw, but i'm looking for some food Sentence12: Sure, there are a number of options. Is there a particular area of town you were interested in? Sentence13: I think the one in the East would be best. Can you give me an address for it? Sentence14: I booked you a table at Hakka (ref #7K0C5AJN). They're on the east side at Milton Road, Chesterton. Question: Who has spoken the sentence 2? (A) User (B) System
Example Output: Answer: (A) User

Example Input: Sentence1: How about the Oak Bistro? It's a British restaurant in the centre, also moderately priced. Sentence2: How about a restaurant that serves gastropub food in the centre instead? Sentence3: I am sorry there are no listings, would there be another area I can search for you? Sentence4: I have 3 restaurants. Two are expensive and one is moderate. Would you like me to book one for you? Sentence5: No, that's all I needed. Have a nice day. Sentence6: Yes, can you see if the moderately priced one can accommodate a party of five at 16:45 on Sunday? Sentence7: Your booking was successful. Your booking number was 13HISQU8 . Can I assist you with anything else today? Sentence8: It can not, I am sorry. Shall I try another? Sentence9: Can I get another restaurant in the centre that is moderately priced? Sentence10: I have to book a place to eat that serves irish food and is located in the centre, can you help me? Sentence11: Thank you, you have a good day too. Sentence12: That sounds amazing. Please try to book that for me. Question: Who has spoken the sentence 9? (A) User (B) System
Example Output:
Answer: (B) System