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

Sentence1: Find me a train that leaves after 11:00 on Wednesday Sentence2: No problem! Have a great day. Sentence3: Great thanks. That's all I need. Sentence4: Yes please. I need the travel time. Sentence5: I would like the address and phone number. Sentence6: Located at 98 king street. Number is 01223314960. Sentence7: No, I think you've answered all my questions. Thank you! Sentence8: The Broughton House Gallery is a free museum located in the centre. Would you like more information about it? Sentence9: Not right now, thanks. I would like to go to a museum while I'm in town, though. Sentence10: I'll be leaving cambridge with a destination of stevenage. Sentence11: No, any area is fine. Can you suggest one? Sentence12: ok, and what is your destination? Sentence13: The earliest train after that time is TR3844. It departs at 11:21 and arrives in Stevenage at 12:10. Would that work for you or would you like a later train? Sentence14: It is a 49 minute ride, it will cost 12.80 pounds. Would you like me to make reservations for you? Sentence15: Were you looking for one in a particular area? Sentence16: Do you need me to look up info about another place or attraction? Anything? Question: Who has spoken the sentence 9? (A) User (B) System
Answer: (B) System