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

Ex Input:
Sentence1: Enjoy your travels! Let us know if we can be of any further assistance. Sentence2: TR8143 departs at 14:11 and arrives in Cambridge by 14:58, does this suit your needs? Sentence3: I need a train leaving from kings lynn. Sentence4: Yes, I'd like to travel on Wednesday, and I'd like to arrive in Cambridge no later than 15:30. Sentence5: There are no nightclubs in the west. Would you like to try another area? Sentence6: There are 133 trains leaving Kings Lynn, do you have a particular day you are traveling? Sentence7: They have free entrance. Their postcode is cb30ds. Sentence8: Could you look up a college instead then? Sentence9: I'm glad I could help. Sentence10: Churchill college is located in the west part of town. Sentence11: Yes it does. Can you verify the total travel time and price? Sentence12: Thank you goodbye. Sentence13: Thanks a lot, that's all. Sentence14: Sure - the travel time is 47 minutes, and the fee is 9.80GBP per ticket. Sentence15: I also need a nightclub in the west. Sentence16: Could you get me the postcode and entrance fee for there? Question: Who has spoken the sentence 9? (A) User (B) System

Ex Output:
Answer: (B) System

Ex Input:
Sentence1: Yes, in the South, I am also looking for Romanian food. Sentence2: Sorry I don't have anything for that either. Sentence3: Can you try chinese? Sentence4: What is the address for the museum? Sentence5: You are booked at Nando's, a cheap portuguese restaurant in the south. Your reference number is ZS1PDFZA . Sentence6: Sorry I don't have anything for that either. Sentence7: Same area and price, but portuguese, anything for that? Sentence8: Does location matter? Sentence9: You choose as long as it is cheap. Could you book a table for 7 people at 15:45 on Wednesday? Sentence10: I found only the Byard Art musuem in the south. There's no entry fee. Phone number, 01223464646. Sentence11: You're welcome, let me know if I can assist with anything else. Sentence12: I need a place to eat that is cheap. Sentence13: There are no restaurants that meet what you're looking for. Is there anything else you'd like to try? Sentence14: Great! Thanks. Have a good night. Bye. Sentence15: it is in the north address is 14 king's parade and free admittance Sentence16: Are there any museums close to restaurant? Question: Who has spoken the sentence 1? (A) User (B) System

Ex Output:
Answer: (B) System

Ex Input:
Sentence1: Yes, please. That would be great. Sentence2: Here is that information,phone-01223302010 post code-cb11bg Address-183 East Road City Centre Sentence3: Thanks so much. That's all I needed tonight. Sentence4: It isn't allowing me to make that reservation, is there a different day I can try. Sentence5: We have several options, and most are in the center of town. I recommend Cotto! Sentence6: Actually, I would just like the address, postcode and phone number instead at this time. Sentence7: Thank you, I also need a 4 star hotel in that area for 3 people, 2 nights, starting Friday evening. Sentence8: Booking was successful. Your Reference number is : Z3CX53OL . Sentence9: The University Arms Hotel fits your specifications, would you like me to book it for you? Sentence10: Okay, please tell me what day you will arrive, how many days you will stay, and how many people Sentence11: I am looking for a restaurant that serves british food in cambridge in the moderate price range Sentence12: Let's try Sunday, please. Sentence13: I need it on Friday for 2 nights and 3 people. Thank you. Sentence14: Absolutely! May I please have the day and time and also the number of people attending? Sentence15: You are welcome, enjoy your stay in cambridge Sentence16: Can you make me a reservation please? Question: Who has spoken the sentence 3? (A) User (B) System

Ex Output:
Answer: (B) System