You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.

Example input: Sentence1:i need a place to dine in the center thats expensive Sentence2: I have several options for you; do you prefer African, Asian, or British food? Sentence3: Any sort of food would be fine, as long as it is a bit expensive. Could I get the phone number for your recommendation?Question: Who has spoken the sentence 2? (A) User (B) System
Example output: Answer: (A) User
Example explanation: The sentence 1 is said by a user because the intent of it says that the information has to be gathered from the system
Q: Sentence1: The Alpha-Milton Guesthouse is moderately priced and is in the north area. Sentence2: The reference number is 5F7YBB5M . Is there anything else I can help you with? Sentence3: Can I book 3 people for 4 nights starting on thursday? Sentence4: No thank you for your time. Sentence5: Sure. That sounds fine. Can you give me the reference number once you book that? Sentence6: I apologize, but there are no rooms available for the days you have requested. Should I look for another hotel? Sentence7: Yes, please find me another one that's available on Thursday. Sentence8: How about the Acorn guest house? It is available on Thursday. Sentence9: You.re welcome Goodbye Sentence10: Could you give me information on a hotel called alpha-milton guest house? Question: Who has spoken the sentence 4? (A) User (B) System
A:
Answer: (A) User