Given the task definition and input, reply with output. You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.

Sentence1: I hope you enjoy the rest of your day too! Sentence2: No. I also need a train. Sentence3: We've got about 5 to choose from. All of them are cheaper. Did you have a preference on the area? Sentence4: That one is perfect. Thanks for your help. Good bye Sentence5: The La Margherita meets your criteria. Would you like to book a table? Sentence6: I looking for an Italian restaurant that offers cheap food. Sentence7: Yes. Please book a table for 2 at 16:45 on friday and please give me the reference number. Sentence8: We have many trains I can book for you. Where are you departing from and going to? Sentence9: Booking was successful. The table will be reserved for 15 minutes. Your reference number is OWGTR8M7 . Will that be all? Sentence10: Departing Peterborough on Friday. Heading to Cambridge. I need to arrive by 09:45. Do you have anything? Sentence11: I would prefer one on the west area. Sentence12: TR1662 departs at 05:19 and arrives at 06:09. Will that work for you or would you like to try a later train? Question: Who has spoken the sentence 10? (A) User (B) System
Answer: (A) User