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

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

[Q]: Sentence1: Yes, please book this. Sentence2: I found 4 restaurants, would you like to try Cotto? Sentence3: Thank you, can I also get a train leaving petterborough and arriving by 11:15 Sentence4: That's all I need, Thank You. Sentence5: Sure, can you try to get a table for 8 people at 17:00 on Tuesday? Sentence6: Okay... how about British food? Sentence7: Booking was successful. The table will be reserved for 15 minutes. Reference number is : IAUXALYD . Sentence8: I just need to make sure I arrive in cambridge by 11:15 please. Sentence9: I would like to try Jamaican food. Sentence10: Unfortunately I can't find any Jamaican restaurants. Is there another type of food you'd like to try? Sentence11: Absolutely. How many tickets would you like to be booked? Sentence12: There are 21 different restaurants in that area matching your price range. What kind of food are you in the mood for? Sentence13: I'm looking for a moderately priced restaurant in the center of town. Sentence14: Sure thing! The reference number is S4FM08GE . See you! Sentence15: There is a train that leaves at 10:19 and arrives at 11:09. Would you like to book it? Sentence16: there are eleven trains that match that criteria. What time would you like your departure time to be? Sentence17: Yes, Tuesday, the same day as the restaurant booking, can I please get a departure time as well? Sentence18: Before going further I would just like to confirm you'd be leaving on Tuesday, is that correct? Question: Who has spoken the sentence 16? (A) User (B) System
[A]: Answer: (A) User

[Q]: Sentence1: You have been super helpful. thanks that's all i need. Sentence2: Please just give me the address, phone number, and area. Sentence3: I have guesthouses in all parts of the city from cheap to moderately priced. Do you have more preferences? Sentence4: Unfortunately I cannot find any multiple sports place in the center. Do you want to try museum maybe? Sentence5: No, I'm also looking for some attractions in town. Any multiple sports attractions located around the centre? Sentence6: you have a wonderful day! Sentence7: Their phone number is 01223446100 and postcode is cb11ly. Do you need anything else? Sentence8: I'd like to find a guesthouse with free parking. Sentence9: Finches bed and breakfast is a guesthouse in the west, it's in the cheap price range with 4 stars. Would you like to reserve a room? Sentence10: I found one. There is the parkside pool in the center. Is there anything else I can help? Sentence11: I can certainly provide you with that. Finches is located in the west at 144 Thornton Road. Their phone number is 01223276653. Can I book you a room? Sentence12: Yes please, I'd like it to be in the cheap price range and I'd also like to stay at a 4 star location. Sentence13: Yes. Can you please give me their phone number and postcode? Sentence14: well, can I try swimming pool maybe? I'm really sporty! Question: Who has spoken the sentence 2? (A) User (B) System
[A]:
Answer: (A) User