You will be given a definition of a task first, then some input of the task.
You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.

Sentence1: Yes, please book the hotel for 5 people starting Wednesday for 4 nights. Sentence2: I would recommend the 4 star Hungtington Marriott Hotel. It does have free parking and internet. Would you like to make a reservation? Sentence3: Yes, I can help with that. Are you staying at in a specific area of town and do you have a price range in mind? Sentence4: Your booking went great! Here is your reference number XGBQHC6Y . Is there anything else I can help with? Sentence5: Thank you goodbye Sentence6: Train TR2052 leaves Cambridge at 19:09 and arrives in Leicester at 20:54. Would you like me to book you a ticket or would you prefer something earlier? Sentence7: Yes, I'm also looking for a place to stay, preferably somewhere with free wifi. Can you assist me with that? Sentence8: I'll be leaving Leicester on Wednesday and I need to arrive in Cambridge by 21:30. Sentence9: Hello! I'm looking for a train. Can you help? Sentence10: I'd be happy to help with your request, first I'll need to know where you are departing/arriving and what day will you be departing? Sentence11: I ned it to be a hotel in the west please. Sentence12: No, I think that's all for today. You've been a great help. Thanks. Goodbye. Sentence13: Booking was successful your reference number is : ZK23HSL9 . Can I help you with anything else? Sentence14: Yes, please book that train for 5 people. Question: Who has spoken the sentence 6? (A) User (B) System
Output:
Answer: (A) User