Given the task definition and input, reply with output. You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.

Sentence1: Thanks. I'd also like to find an interesting attraction in the same area as our restaurant. Sentence2: Any in the town centre? Sentence3: No that's the cheaper choice, La Mimosa and Shiraz Restaurant are both in the expensive price range. Sentence4: How about 14:00 on the same day? Sentence5: That sounds like a great suggestion. Thank you for your help today. Bye. Sentence6: I am looking for a restaurant that serves mediterranean food. Sentence7: I'll try Shiraz. Sentence8: Would you like a table at La Mimosa or Shiraz? Sentence9: Can you book a table for seven people on Thursday at 15:00? Sentence10: I can check on that for you. Yes, I was able to get your reservation set up for 14:00 for 7 on Thursday. Your reference number is O8HA0MSF . Sentence11: Alright, the address to the Holy Trinity church is market street, postcode cb23nz, phone number 01223355397 Sentence12: Can I assist you with anything else or will that be all for you today? Sentence13: Would you be interested in checking out some neat architecture? There are lots of church's in town, many of them are free to visit. Sentence14: I am sorry that was unsuccessful. Would you like book another day or time? Sentence15: Yes, all 3 are in the town center. Would the gardenia work for you? Sentence16: Yes, one of those would be fun. Can you get me their postcode and phone number? Sentence17: There are 3 choices do you want cheap or expensive? I can book one for you if you'd like. Sentence18: I definitely want someplace expensive. Does the Gardenia fit that description? Question: Who has spoken the sentence 16? (A) User (B) System
Answer: (A) User