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: How about the Acorn Guest House in the north side of town? Sentence2: Hi, I am looking for a guesthouse that includes free parking. Do you have anything available? Sentence3: That is all I needed, thank you. Sentence4: I will need the reference number please. Sentence5: Absolutely! When would you like to visit? Sentence6: Perfect, I was able to book the hotel for you. The reference number is 2FD2JYN8 . Sentence7: That sounds great! Sentence8: Enjoy your stay. Bye. Sentence9: Friday. There will be 5 people in my party, and I'll need a reservation for 5 nights. Sentence10: Would you like me to book a room for you? Question: Who has spoken the sentence 1? (A) User (B) System
Output:
Answer: (B) System