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: How about the rice house it is cheap and located at 88 Mill Road city centre? Sentence2: I want to dine at a Chinese food place in the centre area. Sentence3: Ok I will book that for you and get you a confirmation number Sentence4: That sounds perfect. I would like to book a table for sunday. Sentence5: What is your price range for this restaurant? Sentence6: I do not have a price preference. Question: Who has spoken the sentence 1? (A) User (B) System
Answer: (B) System