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

Sentence1: Ok. I was able to book the table for three. Your reference number is 0FOAJA8A . Sentence2: Okay thank you. What time would you like to leave? Sentence3: ok, thank you and enjoy your stay! Sentence4: I'm travelling from norwich. Sentence5: I need to catch a train to get to the restaurant. Can you help with that too? Sentence6: There are 21 restaurants matching your criteria. Is there a type of cuisine that interests you? Sentence7: TR4387 arrives at 07:35, would that work for you? Sentence8: Let's go with Pizza Express, can you book for 3 at 13:30 on thursday please. Sentence9: You'll have to tell me where you are departing from? Sentence10: I need to arrive by 8:00. Sentence11: There are 2 choices, pizza express serves Italian food with a moderate price range, or pizza express Fen Ditton also in the moderate price range. Which shall I reserve? Sentence12: which day do you want to travel? Sentence13: Possibly Italian if that's available for 3 people on Thursday at 13:30. Sentence14: Booking was successful, the total fee is 52.8 GBP payable at the station .Reference number is : 5K7P12XZ . Sentence15: Please list all restaurants in Cambridge centre in the moderate price range. Sentence16: Thank you so much, If you can please leave a review for us. I hope your trip is amazing and very enjoyable. Sentence17: Yeah could I get three tickets please? Sentence18: I want to get there thursday please. Question: Who has spoken the sentence 14? (A) User (B) System
Answer: (A) User

Sentence1: I can definitely help you out with that. Is there a certain area of town you'd like to stay in? Sentence2: I have booked your stay at the Alexander Bed and Breakfast for Friday for 3 days for 6 people. Your reference number is DJF36WMD . Is there anything else I can help you with today. Sentence3: The train ID is TR9629, leaving at 18:09 and arriving by 19:54. Can you tell me how many tickets you would like to purchase? Sentence4: I'd like one ticket please. Sentence5: I will need to take a train from Leicester on the same day as my hotel booking. Sentence6: I am looking for a cheap hotel with free parking. Sentence7: All trips from leicester cost 37.8 pounds and take 105 minutes. Is there a specific time you would like to depart or arrive by? Sentence8: Alexander bed and breakfast is a guesthouse in town centre in the cheap price range. It has both free parking and wifi. Would you like to book a room? Sentence9: We will be arriving on Friday and staying 3 nights. Sentence10: I will need to know how many nights and what day you will be starting your stay before we finish the booking. Sentence11: I do not. I just need the train ID and what arrival time it has. Sentence12: Alright I've booked you one ticket, the total will be 37.79 and your reference number is PGY0G1J2 . How else can I help you? Sentence13: Sure, you need a taxi to Alexander Bed and Breakfast from where, and do you have an arrival time request? Sentence14: Can you please schedule a taxi to take me from the station to my hotel? Sentence15: Thank you for your help. Sentence16: I need to leave after 17:45 heading for Cambridge. Go ahead and book the closest time and give me the train ID and arrival time. Sentence17: The train arrives by 19:54 and TR9629 is the train id. Sentence18: Is there anything else I can help you with? Possibly entertainment or places to visit on your trip? Sentence19: I would prefer to be in the centre of town, and I need the hotel to include free parking. Sentence20: Yes, please. That sounds perfect. There will be six of us. Question: Who has spoken the sentence 12? (A) User (B) System
Answer: (A) User

Sentence1: Well Christ's college is quite famous and is free to enter. Sentence2: Have a great day! Sentence3: Do any of the hotels offer free parking? Sentence4: There are 9 moderately priced hotels to choose from. Any other requirements to narrow down your choices? Sentence5: there are five guesthouses that have free parking. Sentence6: Great I got a white skoda phone number 07971687645 Sentence7: Unfortunately, I don't happen to have anything in the north that is expensive. Is there another price range or area I can try for you? Sentence8: Thank you for your help.Bye. Sentence9: I'll take the highest rated one of those. I need 4 nights starting Tuesday for 7 people, please. Sentence10: How about a moderately priced one? Sentence11: Yes. I'd like to book a taxi to get there. Sentence12: It is located at Saint Andrew's Street, cb23bu. Is there anything else that I can do for you? Sentence13: I would like to leave Christ's college by 19:00. Sentence14: That sounds nice. Can you please give me the address, including the postcode? Sentence15: I would like to stay in the north. Sentence16: I have booked you in the highly rated Acorn guest house for 4 nights beginning Tuesday. The reference number is FK8743UH . Is there anything else I can help with Sentence17: Yes, I would also like to find a place to stay, expensive price range, but with free parking. Sentence18: There are 5 hotels that meet this criteria. What part of town would you prefer to stay in? Sentence19: Yes I am looking for a college to visit. Can you help me? Sentence20: Absolutely, what time would you like to depart from the college? Question: Who has spoken the sentence 7? (A) User (B) System

Answer: (B) System