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

[EX Q]: Sentence1: How many tickets please Sentence2: I want to go to Cambridge on Wednesday. Sentence3: I can give you all kinds of information as well as book a ticket. Where are you going and when? Sentence4: Have a great stay in town. Goodbye. Sentence5: Train TR9741 arrives at 07:52 and I have booked you for 2,here is your information:Booking was successful, the total fee is 8.8 GBP payable at the station . Reference number is : U44P6DQP . Sentence6: I want you to book it for 5 nights, starting wednesday. 2 people. Sentence7: Where will you leave from? Sentence8: Sure thing, what kind of information do you need? Sentence9: Nope, that's all I need today. Thanks for all your help. Goodbye! Sentence10: Okay that booking was successful. Your reference number is 2VD26230 . Anything else I can do for you? Sentence11: I am looking for information and would appreciate the help. Can you help with a train? Sentence12: Would you like to specify a departure or arrival time? Sentence13: I would need 2 tickets. Sentence14: Can you also look up the hotel Carolina Bed and breakfast? Sentence15: I will be leaving from ely. Sentence16: I need to arrive by 08:45 Question: Who has spoken the sentence 13? (A) User (B) System
[EX A]: Answer: (B) System

[EX Q]: Sentence1: there are 11 all with free entrance. Would you like me to recommend one? Sentence2: As previously mentioned, they both have internet available. I don't have specifications about the internet service however. Would you like to book one of these? Sentence3: I can, we have 9 hotels, do you have anything else to narrow it down? Sentence4: Your white ford taxi booking was successful. Its contact number is 07580691974. Sentence5: I have 2 available hotels. One is the Gonville Hotel located on Gonville Place. The other is University Arms Hotel on Regent Street. Which one would you like to book? Sentence6: Do you have there phone number? Sentence7: Your booking was successful and the reference number is ELYPAXQZ . Sentence8: I want to arrive at the Castle Galleries by 11:15. Sentence9: Yes, please book for two nights beginning on Sunday for one person. Sentence10: Yes, please. Can I get the address and phone number for the one you reccommend? Sentence11: Ok, thank you for the help. Sentence12: I'm looking for a hotel, can you help? Sentence13: Can you book the one without wifi? Sentence14: Their phone is 01223307402. Is there anything else I can help you with today? Sentence15: What time do you need the taxi, and which is the destination site? Sentence16: Was there anything else you needed today? Sentence17: Yes, I also need a taxi going between the two places. Sentence18: they both have internet, for what days and how many people should I book? Sentence19: Do either of them offer free wifi? Sentence20: castle galleries is a nice place, their address is unit su43 grande arcade st andrews st and their postcode is cb23bj, anything else today? Sentence21: Thank you. I'm also looking for a museum to go to in the same area. Sentence22: It should be in the centre and be on the expensive side. Question: Who has spoken the sentence 13? (A) User (B) System
[EX A]: Answer: (B) System

[EX Q]: Sentence1: I have two different ones that are great. One is cheaper and the other is moderately priced. Do you have a preference? Sentence2: Yes, there are 70 different options Do you have a preference for day, and time? Sentence3: Yes, please! I'd like it for 15:15 on Thursday for 7 people. Sentence4: That won't be necessary. Sentence5: Yes, I'd like to leave Cambridge on Friday, sometime after 12:30. Sentence6: Booked! Reference number: S22TYNUQ . The table is reserved for 15 minutes. Sentence7: I've got a craving for some pasta. Can you find me a good Italian restaurant on the west side of the city? Sentence8: That's the la margherita. Do you want me to book a reservation? Sentence9: Great. I also need a train to stevenage. Sentence10: No, that will be all thank you for your help. Sentence11: There is a train that leaves at 1:21pm and arrives at 2:10pm. Do you want me to book? Sentence12: Thank you so much for using our services! Goodbye. Sentence13: Is there anything more I can help you with? Sentence14: Yes, definitely the cheap one. Question: Who has spoken the sentence 10? (A) User (B) System
[EX A]:
Answer: (A) User