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

[EX Q]: Sentence1: I have the TR4849 train leaving Ely at 13:35 on Monday. Sentence2: How about cityroomz? It is located in the centre of the city, is moderately priced, has 0 stars, and has free wifi. I think it would be perfect ofor you! Sentence3: Perfect, could you also assist me in finding a place to stay? Sentence4: What will be my arrival time in Cambridge and what is the ticket price, please? Sentence5: You're welcome. Have a great day. Good bye. Sentence6: You are booked and your reference number is QUJQMRK7 . Can I help you with anything else? Sentence7: That is everything, thank you for your help. Sentence8: From where will you be departing? Sentence9: I'm looking for a train that goes to cambridge, leaving after 12:30 on monday Sentence10: I am leaving from Ely. Sentence11: Oh I'm not picky on the area. I definitely need free wifi, moderate price, and 0 stars though. Sentence12: That's perfect I need it booked for 8 people for 5 nights starting on Monday. Sentence13: I sure can. What area would you like to stay? Sentence14: The price is 4.40 pounds. You will arrive at 13:52. Question: Who has spoken the sentence 2? (A) User (B) System
[EX A]: Answer: (A) User

[EX Q]: Sentence1: There are lots of local attractions, are you interested in architecture? Sentence2: No thank you. That will be everything I need today. You have a nice day. Sentence3: You're welcome! Have a nice day. Goodbye. Sentence4: I have confirmed a taxi picking you up at backstreet bistro at 24:45. The contact number is 07972785913. A blue volkswagen will pick you up. Can I help with anything else? Sentence5: Yes sure as long as the attraction is in the city center. Could you also provide me with the phone number and postcode of the attraction? Sentence6: Sure. I also need somewhere to eat. I'm thinking something on the expensive side and close to the college. Sentence7: Backstreet bistro is located in town centre. The address is 2 Sturton Street City Centre, phone 01223306306. Do you need any further assistance? Sentence8: Can I get one in the centre of town and looking for gastropub food. Sentence9: Of course. How about Saint Catharine's College, in postcode cb21rl? Phone is 01223338300. Sentence10: Backstreet Bistro is an expensive restaurant in the centre of town that serves gastropub food. Would you like more information or to make a reservation? Sentence11: Alright, there are 33 different restaurants around the college that are expensive. Is there a type of food you are looking for? Sentence12: Hi, I'm planning a trip to Cambridge and would like a few ideas on places to go for fun. Sentence13: Information, please! I'm not looking to make a booking at the moment. Sentence14: Yes, can you book a taxi between the two? I would like to leave the restaurant by 24:45. Question: Who has spoken the sentence 9? (A) User (B) System
[EX A]: Answer: (B) System

[EX Q]: Sentence1: I have a train leaving that station at 09:32 and arriving at 10:32, if that's acceptable? Sentence2: Yes. It will just me at 17:15 on Friday. Sentence3: There are two restaurants that are Italian, Pizza Hut Cherry Hinton, and Franky and Bennys. The reference number for your train is 0EG8EWWR . Sentence4: I want to take a train to Cambridge on Friday, what's available? Sentence5: Yes, I need the reference number. I am also looking for a place to eat in the south area, preferable italian. Sentence6: No, I need something that gets there by 9:45. Sentence7: I have train TR3005 that arrives at 09:32,would that be good for you? Sentence8: Not really. Please make a recommendation. Sentence9: I'm sorry, both of those restaurants are fully booked for the time requested. May I check another restaurant for you? Sentence10: I found 202 trains. What is your departure station? Sentence11: There is a Pizza Express that is in the Centre area. It is in the moderate category. Would you like me to try to book that? Sentence12: Terrific. I appreciate your help. Good bye! Sentence13: You're welcome! Please let us know if we can assist you in the future. Have a great day! Sentence14: There are many italian restaurants not in the south of town, do you have another area preference? Sentence15: Pick one of those. I need it for the same amount of people at 17:15 on the same day. Sentence16: Okay. Can you find another Italian restaurant? Sentence17: I would like the departure station to be broxbourne. Sentence18: I was able to book it, the reference number is PPXQDNOM . Question: Who has spoken the sentence 17? (A) User (B) System
[EX A]:
Answer: (B) System