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

Example Input: Sentence1: I have a train leaving at 18:11. Will that do? Sentence2: You're welcome. Have a nice day. Sentence3: You train has been booked. Total fee is 19.6 GBP which is payable at the station. Your reference number is 5PVB9XYJ . Sentence4: Arrival time does not matter, just leave after 17:30 Sentence5: Milton Country Park is in the north and has free admission. Sentence6: Is there a time you would liek to arrive by? Sentence7: Hello, I'm looking for a place to go in the north. Could you suggest some places? Sentence8: That would work. Can you book that please? Sentence9: Perfect! That is all I needed. Thank you for the help. Goodbye! Sentence10: I need to book for two people and I need the reference number. Sentence11: Can I get the phone number please? Sentence12: Absolutely. Their phone number is 01223420060. Is there anything else I can assist you with? Sentence13: I'm leaving Kings Lynn on Wednesday. Sentence14: Yea I also need a train that goes to cambridge and should leave after 17:30. Sentence15: How many people would you like to book? Sentence16: What day will you be traveling, and where would you like to depart from? Question: Who has spoken the sentence 2? (A) User (B) System
Example Output: Answer: (A) User

Example Input: Sentence1: Can you book a table at the Bistro for me? 4 people at 13:30 on Sunday, please. Sentence2: I am looking for a place to eat that's expensive and serves Belgian food. Sentence3: I just need the arrival time and price. Sentence4: I have two, the backstreet bistro and the slug and lettuce. Do you have a preference between the two? Sentence5: Yes, what time do I need to be at the station? Sentence6: How about somewhere expensive in the centre? Sentence7: Booking was successful. The table will be reserved for 15 minutes. Reference number is : NSLKEI1G . Sentence8: I want to leave after 10:30 on Monday. Sentence9: The TR8089 meets your criteria. Would you like to book tickets? Sentence10: You're welcome, have a good day. Sentence11: no such restraunts too Sentence12: Thanks! I also need a train from Cambridge to Ely, please. Sentence13: what time will you be departing? Sentence14: I should be asking you what time you need to be at the station. Sentence15: The arrival time for train TR8089 is 12:07, and it will cost only 4.40 pounds. Is there anything else I can help with? Sentence16: I'm sorry, we don't have any Belgian restaurants. Would you like to try a different type? Sentence17: That was everything. Thanks very much! Sentence18: How about a gastropub restaurant? Question: Who has spoken the sentence 1? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: The TR7213 gets you there at 06:08. Need a ticket? Sentence2: No, that is all I need. Thank you for your help. Sentence3: Hello, I need to take a train to Stansted airport, arriving by 20:30. Sentence4: I am happy to help you with the booking, enjoy. Sentence5: Thanks! I appreciate your help. Bye. Sentence6: Yes there is the abbey pool and astroturf pitch would you like their address? Sentence7: Yes. May I have the address and postcode for the Abbey Pool please? Sentence8: Maybe. I need to leave Cambridge on Friday. Will that train work? Sentence9: It's my pleasure. Thank you for using Cambridge TownInfo centre. Goodbye. Sentence10: What is the cost per ticket? Sentence11: No. Are there any swimming pools on the east side of town? Sentence12: The price for that ticket is 10.10 pounds. Would you like me to book it for you? Sentence13: Yes, of course. They are located at Pool Way, Whitehill Road, off NewMarket Road. Their postcode is cb58nt. Is there anything else I can do for today? Sentence14: I recommend TR1110. It will arrive in Cambridge at 20:08 on Friday. I can book passage for you if you let me know how many tickets you need. Question: Who has spoken the sentence 11? (A) User (B) System
Example Output:
Answer: (B) System