You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Q: Sentence1: There are 5 entertainment attractions in town, but they are only found in the east, south, and west. Sentence2: Thanks for using our services. Sentence3: Great. Thanks for all your help. Sentence4: You're welcome! Is there anything else I can help you with? Sentence5: That is all for now. I'll let you know if I need more help in the future. Sentence6: Train TR8176 leaves at 15:25 and will arrive at your destination at 15:52. Would you like me to reserve you a seat on that train? Sentence7: Christ's college is in that area and has free admission. Sentence8: Cool. Could you tell me the postcode and their address? Sentence9: Is there any entrance fee? Sentence10: There is no entrance fee for the attraction. Sentence11: Yes, that sounds good. I am also interested in finding an entertainment centre at my destination. Sentence12: I'm leaving for Cambridge from Ely. Sentence13: I'm disappointed but I would love to see a college, too. Is there one in the centre? Sentence14: sure, what is your destination? Sentence15: I'm heading out on Saturday and need a train that arrives by 17:45 Sentence16: Post code is cb23bu, and their address is saint andrew's street. Question: Who has spoken the sentence 6? (A) User (B) System
A:
Answer: (A) User