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 need a place to stay with free wifi. Sentence2: Location doesn't really matter as long as there's free parking available. Sentence3: Ok, I have several hotels. Any particular location? Sentence4: How about the Gonville Hotel located in the centre area of town? Sentence5: What is their postcode? Sentence6: Their postcode is cb11Iy, address gonville place, phone 0122336661 they have wifi and free parking too. Would you like me to book this for you? Sentence7: I have several available. What is your price range? Sentence8: Between $100-$300 per night. Question: Who has spoken the sentence 2? (A) User (B) System
[EX A]: Answer: (A) User

[EX Q]: Sentence1: No thank you. I have everything I need. Sentence2: The earliest train leaving after 11:45 is at 12:09 on friday. Would you like me to book this for you? Sentence3: I need 1 ticket for departure on Thursday. Sentence4: i need a train going to leicester that leaves after 11:45 Sentence5: That is fine. Can I have the train ID once it's booked? Sentence6: Of course, what day will you be traveling, and how many people will be in your party? Sentence7: I was successfully able to book you a reservation for 7. The reference number is R2RPLBI3 . Can I help you with anything else? Sentence8: There is one restaurant called bedouin, but unfortunately it does not have any open reservations for matching your specifications. Could you provide another day or time? Sentence9: Yes I want to reserve a table for 7 people at 15:00 on Thursday at an expensive African restaurant. Can you help me with this? Sentence10: Could you get a reservation at a difference expensive African restaurant? Sentence11: There are no tables available at Bedouin at that time. Would you like to try a different time slot or perhaps a different day? Sentence12: I will be departing leicester going to cambridge, sorry for the confusion. I need to leave after 11:45 also. Sentence13: Sure. If there are no other African eateries to choose from, try the 14:00 at the Bedouin. Sentence14: Sure, are you going to leicester, or to cambridge? What is your departure site please? Sentence15: Great. I have booked you one seat on the 12:09 train from Leicester and your reference number is 7UR3BFW6 . Is there anything else I can do for you? Sentence16: You are welcome. Good bye. Question: Who has spoken the sentence 15? (A) User (B) System
[EX A]: Answer: (B) System

[EX Q]: Sentence1: No, what type of cheap restaurants are there? Sentence2: I prefer the portuguese restaurant. Sentence3: Nandos is a very popular restaurant serving portuguese food in the south area of town in the cheap price range. Would you like more information or to book? Sentence4: Reference number is : 8T2T8N3Q . Sentence5: If that doesn't work, please try for Sunday. Sentence6: Rosa's Bed and Breakfast is a cheap 4 star guesthouse in the South area of town. Would you like any more information? Sentence7: Can you book for the same group of people at 12:00 the same day? Sentence8: You're welcome, have a great day! Sentence9: Let me look and see if I can find you a room for three people for three nights starting on Thursday. Sentence10: i'm looking for rosa's bed and breakfast Sentence11: No, that's great, thank you. Could you reserve rooms there for 3 people for 3 nights starting Thursday? Sentence12: Thank you! What is the reference number please? Sentence13: No I am sorry there no Scottish restaurants available in the South. Would like to try another area? Sentence14: You are all booked. Reference number is 69V5E4KX . Sentence15: Are you aware of any Scottish restaurants in the south? Sentence16: In the south there are 2 cheap restaurants. One is Chinese and the othe is Portuguese. Sentence17: Thank you. That is all for today. Sentence18: You're all booked. Your table will be reserved for 15 minutes. Question: Who has spoken the sentence 12? (A) User (B) System
[EX A]:
Answer: (A) User