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

Sentence1: I'm looking for a place to stay, I would need wifi, and would prefer moderate pricing? Sentence2: The yu garden is a good place. May I reserve a table for you? Sentence3: That is indeed a 0 star hotel. Would you like to book a room? Sentence4: Yu Garden is an expensive place on the east side of town. Sentence5: Thank you, please contact us again if you need any other information. Have a good day! Sentence6: What area is it? Sentence7: There is cityroomz hotel, is the centre of town an okay area? Sentence8: 529 Newmarket Road Fen Ditton Sentence9: No, I'm looking for a hotel. It has to have 0 stars Sentence10: Thank you. That should be all of the information I need. Sentence11: We have acorn guest house that should fit your needs. Sentence12: Is that a zero star place? Sentence13: What side of town is the restaurant on. Is it in the centre? Sentence14: No, I am also looking for a Chinese restaurant in the same price range as the hotel. Question: Who has spoken the sentence 5? (A) User (B) System
Answer: (B) System