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

Sentence1: Yes, please provide a suggestion. Sentence2: Can you find me a good restaurant in the city centre? Sentence3: Okay, how about Eraina that's on Free School Lane City? Sentence4: Sounds great. Would you book me a table for 8, for Monday at 19:00? Sentence5: There are 11 museums is that area. The great thing is they are all free. Do you want additional information on any of them? Sentence6: Thank you so much for all your help. Sentence7: They are all located in the centre the same as the restaurant. Would you like me to recommend one? Sentence8: Are there any entertainment venues near the restaurant? Sentence9: Your table is booked! Reference #: GV2YF6H5 . The table will be reserved for 15 minutes. Can I assist you with anything else today? Sentence10: You are welcome. Enjoy your time in Cambridge. Goodbye. Sentence11: What area are they in? Sentence12: The fitzwilliam museum has amazing art and sculpture. The address is trumpington street and the phone number is 01223332900. Do you want more information? Sentence13: Your red toyota has been booked and its contact number is 07932820731. Sentence14: there are quite a number. what is your price range? Sentence15: The attraction should be in the same area as the restaurant and should be in the type of entertainment. A museum Sentence16: I will also need a taxi from the attraction to my dinning. Sentence17: I don't really have one but would like to try a European restaurant. Sentence18: There are 44 options available. Is there anything particular you are interested in ? Question: Who has spoken the sentence 15? (A) User (B) System
Answer: (B) System

Sentence1: I'm departing from the oak bistro. Sentence2: I have the taxi ready for you Sentence3: I would like to leave after 17:00. Sentence4: Hi, I need a tax to queens' college please. Sentence5: What time would you like to leave? Sentence6: What is your departure site? Question: Who has spoken the sentence 2? (A) User (B) System
Answer: (A) User

Sentence1: Both trains cost 10.10 pounds per ticket. Sentence2: I am looking for a restaurant to dine at in the centre of town. Could you recommend me any expensive places to try? Sentence3: Yes several. I'd recommend the Cambridge Chop House,Midsummer House Restaurant or Fitzbillies Restaurant Sentence4: I found two trains that will do that, one will leave at 5:40, and one will leave at 6:40, which would you like to book? Sentence5: I think I'm all set. Thank you very much! Sentence6: I found 404 trains leaving on Friday. What is your departure and destination locations? Sentence7: All three serve British Cuisine. Sentence8: No problem! Have a great trip! Sentence9: I'll be going to stansted airport from cambridge, and I need to arrive by 8:00. Sentence10: As long as it will be arriving by 08:00 it doesn't really matter which one, but I need the price of each ticket please. Sentence11: Great thank you so much. Sentence12: Would you still like me to book a ticket for you or are you satisfied at this point? Sentence13: What type of food do those places serve? Sentence14: Alright, would you also be able to help me find a train? I'm looking to leave on Friday. Question: Who has spoken the sentence 13? (A) User (B) System

Answer: (B) System