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: Yes, please book rooms for 7 people for 3 nights starting on Monday. Sentence2: The Acorn Guest House is a moderately priced guesthouse in the north with free wifi. Would you like me to book it for you? Sentence3: Okay, well, how about mid-price range then? Sentence4: I would like the hotel to be in the north please. Sentence5: Good morning, I need a place to stay that has free wifi and that is in the expensive price range. Can you please tell me what is available? Sentence6: The booking was unsuccessful. Want to try another time? Sentence7: I do not have any expensive hotels in the north with free wifi. Would you like me to look in a different price range? Sentence8: Yes, please. 7 people, Monday, for 3 nights. Sentence9: I have 5 hotels that fit those qualifications, do you want to stay in a specific part of town, or is there a star rating you're looking for? Sentence10: Archway house is available. It is a moderately priced guest house in the north with wifi. Your reference number is TBHIHEJT . Would that work for you? Question: Who has spoken the sentence 5? (A) User (B) System
Output:
Answer: (B) System