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

Sentence1: Which one includes free parking? I don't need internet included. Sentence2: Does Finches Bed and Breakfast have free wifi? Since they both have free parking, I might as well go with the cheaper price. Sentence3: Both of them have free parking. Sentence4: Certainly! What time of day would you like to travel, and what are your departure and arrival locations? Sentence5: Good news! Booking was successful. Reference number is : G3504UR7 . Sentence6: Yes that would be perfect! Can I please get it for 3 people, 4 nights and We'll be there by Wednesday Sentence7: That train leaves at 11:11. Travel time is 47 minutes. Sentence8: There are two guesthouses on the west side: Finches Bed and Breakfast, with a cheap price point, and Hobsons House, with a moderate price point. Would you be interested in either of these? Sentence9: Thank you very much for your help. Sentence10: No, I just need the departure time. How long of a trip is it? Sentence11: I need to book a guesthouse in the west of cambridge, are there any? Sentence12: Yes, they have internet as well. Would you like to book this room for you? Sentence13: If you need help with anything else, please don't hesitate to contact us. Enjoy your travels. Sentence14: Will be leaving Cambridge & going to Kings Lynn. Wanted to arrive by 12:00. Sentence15: Sure, TR8704 arrives at 11:58, can I book a seat for you? Sentence16: Fantastic, I'd also like a train leaving on Sunday, please. Question: Who has spoken the sentence 12? (A) User (B) System
Answer: (A) User

Sentence1: Okay. Sorry for the mix-up. Thanks for checking. Sentence2: The travel time is 105 minutes and the cost is 37.80 pounds. Sentence3: I'm looking for something in the expensive price range. Sentence4: I would like to recommend Ugly Duckling. Would you like me to make reservations for you? Sentence5: Yes, a table for 1 at 20:30. But could you check the train again? I need to leave from Liecester, not arrive there. Sentence6: No you have been a great help, thanks. Sentence7: TR6723 leaves on monday from cambridge arriving in leicester at 16:06. Would that work for you? Sentence8: Now that your reservation at Ugly Duckling is taken care of, is there anything else I can assist you with today? Sentence9: We have 77 options available. Is there a certain day you want to travel? Sentence10: I have your table for 1 booked at the Ugly Duckling, Monday at 20:30. The reference number is YDG81NJ5 . Just a moment while I check on the train. Sentence11: Yes, I'd like to leave on Monday, going to Cambridge from Leicester. Sentence12: It was a pleasure to help you. Thanks for using our service. Goodbye. Sentence13: Okay, I also need a Chinese restaurant in the centre, please. Sentence14: Could I have the travel time and price for that particular train? Sentence15: Yes I can book that for you if you would like. Sentence16: I have 10 restaurants in the centre area that have chinese. Do you have a certain price range in mind? Sentence17: Yes, that would be great. Thank you. Sentence18: I am looking for a train that leaves Cambridge going to Leicester arriving by 16:15 Question: Who has spoken the sentence 5? (A) User (B) System
Answer: (B) System

Sentence1: The train from Norwich to Cambridge is about 45 minutes. Do you have a preferred departure or arrival time? Sentence2: The Cambridge Belfry is perfect for you. Would you like me to book it? Sentence3: Saturday train from Norwich please. Sentence4: Is there any other hotels that would work in that area that are 4 star? Sentence5: Great, I have booked you for acorn guest house. Your reference number is O2JPQNG5 . Sentence6: Yes, please book that for the same group of people for 4 nights the same day. Wednesday would work also, and I need the reference number. Sentence7: No, I would really like a 4-star hotel in the north area with free parking. Can you please check again? Sentence8: The best response I have to that is a train arriving at 13:35. Would you like me to book that option for you? Sentence9: Yes, for 7 people please. Sentence10: Sorry, there are only guesthouses. Sentence11: I recommend the acorn guest out. Shall I book that then. Sentence12: Unfortunately, I can't book either days for you. Sentence13: Thank you very much. That's all I need. Sentence14: I am also looking for a place to stay. I'd like a hotel with a star of 4 of course that will include free parking. Sentence15: You have been successfully booked for 7 people on Train TR2334, Reference number 01MDBEIB . It departs Norwich at 12:16. Your total cost is 98.56 and is payable at the station. Sentence16: I will book it for you,is there anything else I can do for you ? Sentence17: Yes please. I would like to arrive by 14:00. Sentence18: You are welcome, enjoy your stay Sentence19: Before you book, the hotel has to be in the north, also. Do you have a hotel meeting my needs? Sentence20: I don't have any hotels in that area that are 4 star. I do have several guesthouses. Would that work for you? Sentence21: Yes for 4 nights same group of people as the restaurant reservation and also on the same day please. Sentence22: I guess we will take a guesthouse then. Which one would you recommend? Question: Who has spoken the sentence 18? (A) User (B) System

Answer: (A) User