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

[EX Q]: Sentence1: Yes, I would like a moderate price range with a 3 star rating. It doesn't need free internet. Sentence2: Yes!, Please find a reservation of a restaurant that serves Turkish food. Sentence3: Can you recheck the same area that has free wifi? Sentence4: Yes please, can i have the reference number? Sentence5: Did you book me at Anatolia Turkish? I need to book for 6 on Thursday at 17:30. Sentence6: I will get that for you now. Sentence7: Sorry I missed it before, I did find a moderately priced guesthouse in the west with Internet. The Hobson house. Shall I make a reservation? Sentence8: It is. On what day will you be checking in, for how many nights, and how many people? Sentence9: I have your booking for the Hobsons House. Your reference number is A4UULB11 . What else can I do for you today? Sentence10: Have a nice day. Sentence11: yes, if it has a three star rating Sentence12: You are booked at the Anatolia. Your reference number is IS9T6H2A . The table will be reserved for 15 minutes. May I help with something else? Sentence13: I have all price ranges and some guesthouses. Any preferences? Sentence14: Great Thanks for all your help. Sentence15: It will be for 6 people for 5 nights starting from Thursday.Can you get me the reference number? Sentence16: I have anatolia turkish located in the centre. It is moderately priced would you like to make reservations? Sentence17: my records shows nome. can we change location? Sentence18: I can go ahead and book that for you now. Sentence19: I'm looking for a restaurant in the same price range as the guesthouse, one that serves corsica food. Sentence20: Once you find the restaurant you want to book a table for the same group of people at 17:30 on the same day. Sentence21: I need a place to stay in the west of town. Sentence22: there is no place they serve corsica food. can you change the cuisine? Question: Who has spoken the sentence 17? (A) User (B) System
[EX A]: Answer: (B) System

[EX Q]: Sentence1: It's cb12bd. Anything else I can get you? Sentence2: How about something in the south and moderate price range? Sentence3: I'll take Rice House, what's the postcode? Sentence4: There are 3 cheap chinese restaurants in the centre of town: Charlie Chan, Rice House, or Golden House. Would you like me to book any of these? Sentence5: Sure let's try chinese food. Sentence6: I was not able to find any restaurants matching your requirements. Sentence7: I'm still not finding anything. Would you like me to search a different part of town or a different food type? Sentence8: You're welcome. Have a great day! Sentence9: That's all. Thank you. Sentence10: I am looking for a cheap gastropub restaurant in the centre of town Question: Who has spoken the sentence 6? (A) User (B) System
[EX A]: Answer: (A) User

[EX Q]: Sentence1: Awesome. Thanks for all of your help. I have everything I need now. Sentence2: Thank you! From the hotel to the restaurant, please. Sentence3: Booking completed! Booked car type : black volkswagen Contact number : 07559655717 Can I help you with anything else today? Sentence4: Sure! When would you like to leave/arrive? Sentence5: The Lensfield Hotel is in the south. It is a 3 star hotel. Would you like me to book it for you? Sentence6: I am also looking for a restaurant, should be cheap and in the south, near to my hotel. Do you have any options? Sentence7: by the restaurant booked time. Sentence8: I have confirmed there are no international options, do you want to stick with nandos or run another search? Sentence9: I can help, where to and from, and what time? Sentence10: Thank you sir, I was starting to think this was a prank, you are set, your reference number is YNZ558E6, can I help with anything else? Sentence11: I also need a taxi to take me between the two places please. Sentence12: As I mentioned earlier, the only options in the south that are cheap are The Lucky Star (chinese) and Nando's (portuguese). Do you want me to search another area or price? Sentence13: Sorry, this is the husband, Im taking over the call, my wife is too indecisive. Please book us for Nandos at 13:45 on tuesday for 5 people, thank you. Sentence14: Can you just verify, is there an international restaurant in the south or no? Sentence15: I was goona ask to search for international, but it sounds like their isnt an option with a cheap price. Lets go with Nando's Sentence16: I have 2 choices. The Lucky Star serves chinese. And, Nando's is a portuguese restaurant. Which do you prefer? Sentence17: Can I get their postcode? Sentence18: Okay would you like to make a booking? Sentence19: Great, shall Il go ahead and book you then? Sentence20: rosa's bed and breakfast post code is cb22ha Sentence21: Are there no international places to dine in the area? Anything other than British food in the area? Sentence22: I need to find somewhere to stay in the south Sentence23: What is the price range? I'd like something in the cheap price range. Sentence24: I am glad that I can help. Have a nice stay. Sentence25: As long as it has free wifi I'll be happy! Sentence26: Then, I would recommend rosa's bed and breakfast, a cheap 4 star guesthouse. Do you need more information? Question: Who has spoken the sentence 17? (A) User (B) System
[EX A]:
Answer: (B) System