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: That is all thank you. Sentence2: I was able to book you at the oak bistro. Reference number K4QUY32N . Is there anything else I can help you with? Sentence3: I have found The Copper Kettle lcoated at 4 Kings Parade. Would you like to make a reservation? Sentence4: Can you find me another place in the same area and price range? Sentence5: Booking was unsuccessful, would you like to try a different time of place? Sentence6: Yes I would like a table for 3 on tuesday at 15:15. Sentence7: I'm looking for a restaurant called the copper kettle. Sentence8: Okay enjoy your dinner. Question: Who has spoken the sentence 3? (A) User (B) System
Answer: (B) System