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, what type of attraction is Cherry Hinton Water Play? Sentence2: Please book it and send me the confirmation code. Sentence3: Again thank you and have a great day. Sentence4: Thanks I'm also looking for a train that leaves on Thursday. Sentence5: Just one seat. Sentence6: OK, what are your departure and arrival stations, and what time do you want to travel? Sentence7: Before i book it, could you confirm the number of seats you need? Sentence8: You're welcome! Is there anything else I can help you with? Sentence9: It is a park. Sentence10: Excellent, I can't wait to visit it! Thank you. Sentence11: I am looking for information about the the Cherry Hinton Water Play Sentence12: excellent, have a great day! Sentence13: I'd like to go to Cambridge via Broxbourne. I'd like to leave on Thursday and arrive no later than 12:00. Sentence14: That is a free park on the east side of town. They are located at Cherry Hinton Hall on Cherry Hinton Road. Their phone number is 01223446100. Sentence15: I have on that arrives at 11:32. Would you like me to book that for you? Sentence16: Perfect thanks for the help thats everything I need! Sentence17: Well I glad i can help enjoy your stay ! Sentence18: Your booking was successful! The reference number is 698RE4W1 . The total fee of 17.89 is payable at the station. Question: Who has spoken the sentence 17? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: Ok, that would be great. Can I get the reference number please? Sentence2: Sure, and make me a booking for 7 people. Sentence3: I'll be departing from Cambridge on Wednesday. Sentence4: Yes I need a train going to birmingham new street leaving after 18:15. Sentence5: I have Hughes Hall, 01223334898, with free entrance. The broughton house gallery at 01223314960, also free. I don't seem to have any churches. Can I help you further? Sentence6: there are some great museums, colleges and churches for you to visit. Sentence7: Please recommend some worthwhile places to visit in the centre. Sentence8: Have a wonderful visit. Thank you for using Cambridge TownInfo Centre. Goodbye. Sentence9: I will go ahead and book that for you. Sentence10: Great, I would like to get some phone numbers for those places in the centre. Sentence11: Where will you be departing from, and on what day? Sentence12: Thank you. That's all I need for today. You've been a great help. Sentence13: There are five trains leaving on Weds. Do you want me to pick one to book? Sentence14: TR9236 leaves cambridge on wednesday on 19:01 and arrives at birmingham new street at 21:44. I have booked 7 tickets. Your Reference number is : 2BGY3ZRW . Question: Who has spoken the sentence 6? (A) User (B) System
Example Output: Answer: (A) User

Example Input: Sentence1: I'm are looking for a train. The train should depart from peterborough and should leave after 10:15 Sentence2: What day would you like to depart? Sentence3: It will be Sunday, from peterborough to cambridge, I will need the price of the ticket as well. Sentence4: The closest match I have is the TR8509. It leaves at 10:19. Sentence5: It costs 13.20 pounds. Do you need any other information? Sentence6: No that is all. Thanks for your help! Sentence7: That sounds good. What is the train fare, please? Sentence8: You are welcome! Have a nice day. Question: Who has spoken the sentence 7? (A) User (B) System
Example Output:
Answer: (B) System