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: What day are you travelling? Sentence2: You are very welcome. Enjoy your day too. Bye. Sentence3: I'd like to book 3 tickets on the train arriving at 19:08, please. And would it be possible to have a reference number for the booking? Sentence4: I will need to leave from Cambridge if that's ok Sentence5: I have a train that arrives earlier at 18:08 and one that arrives just before your specified time at 19:08. Sentence6: Sure. Where will you be leaving from? Sentence7: I was wondering if you could help me in finding a train to the airport. Sentence8: OK, you have 3 tickets reserved on TR4447, departing Cambridge at 18:40, arriving Stansted at 19:08. Total fee is 30.29 GBP. Reference #5VRJSMSE . Will that be all today? Sentence9: Yes, it will. Thanks so much. Have a nice day. Sentence10: On Wednesday. I need the train to arrive by 19:15. Question: Who has spoken the sentence 7? (A) User (B) System
Answer: (B) System

Sentence1: Yes, it's for 8 people. 16:45 on Monday. I would like the reference number, if it is available. Sentence2: Yes please try the Shiraz Restaurant. Sentence3: I'm looking for a place to eat. I would like it to be an expensive restaurant in the centre. Sentence4: That wasn't available. Shall I try the Shiraz Restaurant? Sentence5: I'm looking for a restaurant with mediterranean food. Sentence6: I have found two restaurants. One is La mimosa, and the other is Shiraz restaurant, would you like me to book one for you? Sentence7: You are welcome. Enjoy your stay in Cambridge. Sentence8: I found 33 expensive restaurants in the centre. What type of cuisine would you like? Sentence9: You've got a table for Monday at Shiraz Restaurant. Your reference number is NS7MCM5B . Can I help with anything else today? Sentence10: That will be all. Thank you very much. Sentence11: Can I please get the number of people dining,day,and time please. Sentence12: Please book the One is La mimosa Question: Who has spoken the sentence 3? (A) User (B) System
Answer: (B) System