You will be given a definition of a task first, then some input of the task.
You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.

Sentence1: You're welcome. Have a good day. Goodbye. Sentence2: I am looking for a British restaurant that is moderately priced. Sentence3: How about the center? Sentence4: There are a few restaurants that will meet your needs. I suggest The Copper Kettle at 4 Kings Parade City Centre. Sentence5: Please book a table for 3 at 14:15 on Friday at The Copper Kettle. Sentence6: I was able to book a table for you at 14:15 at the Copper Kettle. Your reference number is 3ED8CQBU . Is there anything else I can assist you with? Sentence7: There are a few of them. Would you prefer the centre of town or the west area? Sentence8: That is all. Thank you very much! Question: Who has spoken the sentence 3? (A) User (B) System
Output:
Answer: (B) System