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

Example Input: Sentence1: Have a good day! Sentence2: No thank you, that is all. Sentence3: I am looking for a train to London Kings Cross that departs after 08:15. Sentence4: The TR2000 leaves cambridge going to london kings cross on friday at 09:00. It arrives in london kings cross at 09:51. How does that sound? Sentence5: Yes. What do you have available? Sentence6: Are you departing from cambridge station? Sentence7: I'll be travelling on a Wednesday. Sentence8: That's great. Please book me two tickets. Sentence9: The booking was successful and the fee is 47.2 GBP payable at the station. Reference number is E2N0JHSY . May I assist you with anything else today. Sentence10: What day would you like to travel? Question: Who has spoken the sentence 3? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: I sure can. I found a 3 star hotel and a 4 star hotel. Do you have a preference? Sentence2: Great, thank you for your help. Sentence3: Thank you , good day to you. Sentence4: You are very welcome! Is there anything else I can help you with? Sentence5: How about the Gonville Hotel located in the centre of town is in the expensive price range? Sentence6: Good afternoon, can you help me find an expensive place to stay in the town centre? Sentence7: It should be a hotel type hotel not a guesthouse Sentence8: Yes, that sounds good. Could you reserve a room for 5 people checking in on Saturday? I think we'll stay for 3 nights. Sentence9: Booking was successful. Reference number is : KRJNYV0Q . Sentence10: No, that will be all. Thank you. Question: Who has spoken the sentence 6? (A) User (B) System
Example Output: Answer: (A) User

Example Input: Sentence1: Where would you like to depart from? Sentence2: Can I please book a train to bishops stortford on saturday? Sentence3: I have the TR0121 train available. It departs from Cambridge at 15:29 and arrives at Bishops Stortford at 16:07. Would you like to book a ticket? Sentence4: We have many guesthouses located in the north, many of which are 4 stars. May I recommend the Kirkwood House located in the north for a moderate price with 4 stars? Sentence5: May I ask a price range that you would like? Sentence6: Yes it most certainly does. Sentence7: I'd like to leave Cambridge and arrive by 17:30. Sentence8: No thank you that is all I need today. Sentence9: Okay. The guesthouse is Kirkwood House and it is moderately priced, located at 172 Chesterton Road Reference Number CB41DA . Sentence10: Your passage has been booked. 16.16 GPB will be payable at the station and your reference number is ZVFTQ0X3 . Will that be all? Sentence11: Thank you. I also need help finding a place to stay. I'd prefer a guesthouse with free wifi Sentence12: The Kirkwood House is moderately priced and is located at 172 Chesteron Road, CB4 1DA. Can I help you with anything else today? Sentence13: What's the price range, postcode and address please Sentence14: Does the Kirkwood House include free parking? Sentence15: I don't care about price. It needs to be in the north, however. Sentence16: Yes. Please book for 2 people. Question: Who has spoken the sentence 11? (A) User (B) System
Example Output:
Answer: (B) System