Detailed Instructions: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Problem:Sentence1: Is there any train to stevenage that leaves after 15:45? Sentence2: Booking was successful. The table will be reserved for 15 minutes. Reference number is : 2Q3DVUFC . Anything else I can do for you? Sentence3: TR4216 leaves at 17:21. Does that work for you? Sentence4: riverside brasserie serves modern european food. Would you like me to book seats? Sentence5: yes, please. 8 people at 12:00 on saturday. Sentence6: No that's all for today, thank you. Sentence7: What day would you like the train for? Sentence8: I will be travelling from Cambridge on Saturday, Sentence9: The train will arrive by 18:10 Sentence10: I'd like a modern european restaurant. Sentence11: What time will it arrive? Sentence12: Thank you for calling. If you need additional assistance, please feel free to call again. Have a great time in Cambridge! Goodbye. Sentence13: Thanks! I'm also looking for a place to eat in the centre if you don't mind. Sentence14: There are lots to choose from. First, may I ask if you have a certain type of cuisine you are looking for? Question: Who has spoken the sentence 7? (A) User (B) System
Solution:
Answer: (B) System