Instructions: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Input: Sentence1: Can you help me find a train leaving on tuesday going to cambridge? Sentence2: Yeah I am also looking for a hotel by the name of lovell lodge. Sentence3: What day will you be arriving? Sentence4: Sure, where are you leaving from and any certain departure or arrival times? Sentence5: Four people please. Sentence6: Great! Can you book for 4 people, please? I'll need the reference number. Sentence7: Lovell Lodge is a moderately-priced 2-star hotel in the north area of town. They're located at 365 Milton Road, cb41sr. Sentence8: I want This to be on Tuesday Sentence9: Thank you so much. That's all for now. Good bye. Sentence10: You are thorough, I would like to book my group a 4 night stay there, please. Sentence11: How many are in your group? Sentence12: Absolutely. Four tickets have been booked for this route and your reference number is 6YC0WN0E . Is there anything else I can help you with? Sentence13: I have the tr6741 leaving at 18:40 how many tickets would you like? Sentence14: Thank you for using our service! Sentence15: i'm leaving from birmingham new street after 18:30 Sentence16: Okay that booking was successful. Your reference number is JGZHQJD7 . Question: Who has spoken the sentence 6? (A) User (B) System
Output:
Answer: (A) User