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

Example Input: Sentence1: Yes, please. Could you book that for five people as well? Sentence2: The Gonville Hotel is rated 3 stars. There is free internet and parking. It is located at Gonville Place and their phone number is 01223366611. Sentence3: Booking was successful. Reference number is : 5C9C9Y4I . now i can help you book a train Sentence4: Thank you. That is all I need today. Sentence5: I have train TR8860 and leaves at 5:50 and arrives at 6:07. Would you like reservations? Sentence6: My companion and I will arrive on Monday, staying for 5 nights, could you provide me with the reference number? We will need to book a train as well. Sentence7: I would like some information on the gonville hotel Sentence8: Excellent. Could you book it for myself and my partner? Sentence9: Booking was successful, the total fee is 17.6 GBP payable at the station .Reference number is : THCMI67T . Sentence10: enjoy your time with us in Cambridge, enjoy! Sentence11: Sure. Can you confirm when you will be arriving and for how many nights you will be staying? Sentence12: uh why yes you are very perceptive. depart cambridge arrive by 9:45 leaves on sat going to ely Question: Who has spoken the sentence 7? (A) User (B) System
Example Output: Answer: (B) System

Example Input: 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
Example Output: Answer: (A) User

Example Input: Sentence1: ok did you need an attraction ? Sentence2: i want to leave friday, after 10 Sentence3: I can help you out! What would you like to see? Sentence4: That is all, have a great day. Sentence5: Booking was successful, the total fee is 75.09 GBP payable at the station . Reference number is : UFTQBOZS . What else can I help you with today? Sentence6: Where will you be going? Sentence7: What day would you like to leave? Sentence8: Yes, could you please book that for me. I need one ticket. Sentence9: The Riverboat Georgina you may like. It has passenger cruises and more. Sentence10: Yes, please. I am looking for a boat type of attraction. Sentence11: No preference. Which one do you recommend? Sentence12: I am planning a trip in Cambridge Sentence13: Thank you, you too. Sentence14: The TR0044 meets your criteria. Would you like to book tickets? Sentence15: I will be going to cambridge. Sentence16: Well, I actually need a place to stay. Sentence17: Yes I have several in the center and one in the north and east. Any preferences? Sentence18: Thanks, I'm also looking for a train to cambridge departing birmingham new street. Question: Who has spoken the sentence 3? (A) User (B) System
Example Output:
Answer: (B) System