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

[EX Q]: Sentence1: Actually, I'm all set. Thank you! Bye! Sentence2: OK, great. will it be the same two people as on the train and starting on Monday? or do you have different needs for lodging? Sentence3: What is the price for that trip? Sentence4: Could you clarify if you need the reservation for 1 or 2 people please? Sentence5: Certainly, where will you be departing from? Sentence6: It look like the TR0532 is what you are looking for departing Bishops Stortford at 7:29 and arriving in Cambridge at 8:07. Would you like to book? Sentence7: The postcode for Worth House is cb41da and yes, it has internet! Sentence8: I would prefer the hotel be in the north part of town. Sentence9: I don't need to book today, thanks. Can you get me the postcode of one of them? Oh, and please make sure the one you choose has internet! Sentence10: Okay you sure you will not require a booking? Sentence11: I need a cheap hotel with free parking. Sentence12: The fare is 10.10 GBP per ticket. Sentence13: Okay let me see if I can book that for you. Sentence14: I need reservations for 2. Sentence15: Hi I am looking for a train to arrive in Cambridge by 08:15. Sentence16: Nope, same people. Sentence17: I've booked your tickets for the 7:29 train from Bishops Stortford, reference ZHT6R80S . Can you give me more information about the type of hotel you'd like? Sentence18: 1 person 5 nights please Sentence19: There are 10 total hotels, do you have a preference for area? Sentence20: I'd be happy to book that for you, what day will you be arriving on, and for how many nights? Sentence21: I'll be leaving from Bishops Stortford on Monday. Sentence22: I will go ahead an book at the Worth House. Sentence23: City centre north b and b and Worth house are both guesthouses and located in the north. Would you like me to book one for you? Sentence24: I need to make a booking for 2 people and can you find me a place to stay in the north? Question: Who has spoken the sentence 17? (A) User (B) System
[EX A]: Answer: (B) System

[EX Q]: Sentence1: There are several hotels of that nature. What is your price range? Sentence2: Hotel allenbell is what I found that is cheap and has parking. Sentence3: You're welcome. Have a great day. Goodbye. Sentence4: Could you get the postcode for Hotel Allenbell for me? Sentence5: Yes, please reserve the room. Sentence6: I am also looking for a place to stay in the east that includes free wifi. Sentence7: Actually, on second thought. I should book it later. But, can you book me a taxi from Allenbell to J Restaurant. I need to be there by 13:15. Sentence8: Thanks, I think that's all I need. Could you just confirm whether the Allenbell is a Hotel or a Guest House? Sentence9: Absolutely, your reservation's been made. Your reference number is YAHBIZR5 . Can I help you with something else? Sentence10: J restaurant is an asian oriental restaurant in the centre of town. It is cheap and located at 86 Regent Street City Centre. Sentence11: Hello I am looking for a restaurant called J restaurant Sentence12: Allenbell is a guesthouse. Sentence13: That sounds great. Can you reserve a table for 2 for Sunday at 13:15? Sentence14: What day will you be checking in, and how many will you stay for? I assume it is for 2 people? Sentence15: Thank you. That will be everything today. Goodbye. Sentence16: The postcode is cb13js. Would you like to get a room reserved? Sentence17: Your taxi was booked! The car type will be blue ford and the contact number is 07646890093. Sentence18: I'm looking for something cheap with free parking. Question: Who has spoken the sentence 8? (A) User (B) System
[EX A]: Answer: (A) User

[EX Q]: Sentence1: Is it in the moderate price range? If so, yes. Sentence2: I'd be happy to help you find something. Is there an area you prefer? And do you want a hotel or guesthouse? Sentence3: And for how many days? Sentence4: Are there any cheap guesthouses in the centre of town? Sentence5: I would recommend el shaddai. Would you like a reservation? Sentence6: Yes, that will work! I need the reference number please. Sentence7: There are 7 trains that fit your criteria. The first one after 10 is the TR8377, leaving Cambridge 11:21, arriving Stevenage 12:10. Would you like to book a seat? Sentence8: I'm sorry there are no moderate guesthouses in the centre, maybe another area perhaps? Sentence9: There will be 2 people and we will arrive on Monday. Sentence10: I'm sorry, 5 nights please. Sentence11: Thank you so much! That's all I needed. Have a great day! Sentence12: Please give me your departure site and your destination station. Sentence13: I definitely want both a guesthouse and the centre of town. Sentence14: Yes, I've located Alexander Bed and Breakfast that is a 4 star and El Shaddai that is a 0 star. Do you have a preference? Sentence15: Good News! I got the Alexander Bed and Breakfast in 56 saint barnabas road cb12de, phone number 01223525725. The reference # is 3MWI64S9 . Sentence16: Great. I also need a train leaving on Saturday. Sentence17: I would like to try another price range, only in the moderate range. I would like to stay in the city centre. Sentence18: no preference I also need a reference number. Sentence19: I am going to cambridge and need a place to stay. Sentence20: Booking was successful, the total fee is 10.24 GBP payable at the station . Reference number is : Y5AV9STN . Sentence21: Have a nice day then, and goodbye. Sentence22: It is not in the moderate price range, would you like to try another area or a different price range perhaps? Sentence23: What day would you like to stay and how many people will be staying? Sentence24: The train should leave after 10:00 and should go to stevenage, leaving from cambridge. Question: Who has spoken the sentence 17? (A) User (B) System
[EX A]:
Answer: (B) System