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

[EX Q]: Sentence1: Yes, of course. How many tickets would you like booked? Sentence2: Where are you traveling to and from? Sentence3: I have reserved your table. Your reference number is TRQQXOBM . Sentence4: Thank you. Sentence5: The train departs Cambridge at 13:06. Sentence6: No, I think that's all I need today. Thank you for your help! Sentence7: I am traveling from Cambridge to Peterborough. Sentence8: Thank you for using this system. Sentence9: We have many trains that fit your needs. The latest one you could take would be the TR9792 which would have you arriving at 13:56. Sentence10: I have 2, one in the south and one in the centre of town. Both are cheap and serve portuguese food. Sentence11: Thanks for that, I am also looking for a train that should arrive by 14:15 and should leave on Thursday. Sentence12: Okay great. enjoy your travel and thank you for calling. Sentence13: Could you book a reservation for me? I would like a reservation for 6 people at 14:00 on Wednesday. May I also have the reference number? Sentence14: I'm looking for a cheap restaurant that serves portugese food. Sentence15: Booking was successful for TR9792, the total fee is 99 GBP payable at the station. Your reference number is : BKXNWE2O . Do you need any further assistance? Sentence16: Thank you. Can you please book that train for me? Sentence17: I need 6 tickets. Sentence18: OK, thanks. When does that train depart? Question: Who has spoken the sentence 9? (A) User (B) System
[EX A]: Answer: (B) System

[EX Q]: 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 A]: Answer: (B) System

[EX Q]: Sentence1: Okay glad I could be of help! Sentence2: Any would be fine. But I need to book a table for 8 people for Sunday at 12:15. Sentence3: Can you see if there are any that serve indian food? Sentence4: Sure as long as it's in the same area and price range. I need the reference number too please. Sentence5: Booking was unsuccessful at rice boat. Would you like to find another restaurant? Sentence6: Thank you, that's all I needed today! Sentence7: Okay I booked you at the Tandoori Palace and your reference number is NBLD7E0V . Sentence8: Unfortunately there aren't any restaurants that fit your criteria. Is there anything else that I can do for you? Sentence9: There are six restaurants, one in the moderate price range and the rest in the expensive price range. Which one would you prefer? Sentence10: I am looking to get some eritrean food in the west part of town. Question: Who has spoken the sentence 7? (A) User (B) System
[EX A]:
Answer: (B) System