You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
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Question: 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: Answer: (B) System

Question: Sentence1: I am sorry there is nothing that meets that criteria. Is there another type of food or area you would be interested in? Sentence2: Thanks, will you please book a table for 7 people on thursday at 13:00? Sentence3: I'm looking for a restaurant in the east. Sentence4: How about British food? Sentence5: There are nine restaurants in the east. Do you have a price range in mind? Sentence6: You are welcome. Enjoy your dinner! Sentence7: Booking was unsuccessful. can we book another day or time slot? Sentence8: Nope, that should be everything. Thank you so much for all of your help. Sentence9: Booking was successful for Thursday at 1200hrs , table for 7 at Grafton Hotel restaurant. Your Reference number is KQKTCX5Y . Is there anything else I can help you with? Sentence10: I would recommend you try Grafton Hotel Restaurant. As requested it is in the east and serves British food. Sentence11: I don't have a price range but I am looking for asian oriental cuisine. Is that possible? Sentence12: please try booking at 1200hrs and get me the reference number Question: Who has spoken the sentence 11? (A) User (B) System

Answer: Answer: (B) System

Question: Sentence1: I am looking for a train going to cambridge. Sentence2: Do you have a time you'd like to leave by? Sentence3: yes, please. I need the price and travel time. Sentence4: I would like to leave Broxbourne on Tuesday. Sentence5: That is for TR8361? Sentence6: Yes. TR8361 is 17.90 pounds. Would you like to buy a ticket? Sentence7: Sure, where are you departing from and what day? Sentence8: Your confirmation number is BAMJW6M2 . May I help you with anything else? Sentence9: I think you've answered all of my questions! Thank you so much! Sentence10: Not a problem. Have a good time! Sentence11: I'd just like to arrive by 16:45 please. Sentence12: TR8361 will arrive in cambridge by 16:32 on Tuesday, does this suit your needs? Sentence13: Thank you for your help. Sentence14: Yes I would like a ticket for one. Sentence15: You're welcome. Call us again when you need to. We're always here! Sentence16: The price is 17.90 pounds. The train leaves at 15:32 making the travel time one hour exactly. Is there anything else? Question: Who has spoken the sentence 11? (A) User (B) System

Answer:
Answer: (B) System