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

Sentence1: No. that will be all. good bye. Sentence2: To help you find the train you are looking for could you please provide me with your departure site and destination? Also your departure time and arrival time? Thank you. Sentence3: We have lots of architecture, colleges and museums. Do you have a preference? Sentence4: The train ride is 60 minutes long. Sentence5: Nope, any will be fine. I just need an entrance fee and phone number for one. Sentence6: How long does the journey take? Sentence7: Have a great day! Sentence8: Okay, you can try Great Saint Mary's Church. Admission is 2 Pounds. Their phone number is 01223350914. Can I help you with anything else? Sentence9: Can you assist me in getting a train that leaves after 18:30? Thanks Sentence10: I have 6 trains for you to choose from. The earliest leaves at 18:32. Do you want me to book a ticket? Sentence11: Thanks, that's all I need for the train for now. Are there any interesting attractions in the town centre? Sentence12: I'm coming from Broxbourne going to Cambridge on Saturday. Question: Who has spoken the sentence 1? (A) User (B) System
Answer: (B) System