Given the task definition and input, reply with output. You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.

Sentence1: You are welcome. Have a lovely day. Sentence2: That would be the El Shaddai, would you like to book there? Sentence3: It has free parking with a 4 star rating Sentence4: Great. That's actually all I need today. Thank you for your help! Sentence5: For which day would you like the reservation? Sentence6: I'm looking for a hotel with 0 stars Sentence7: The price range is cheap, and the address is 41 warkworth street. Sentence8: I'm looking for a restaurant in the centre of town that's in a moderate price range. Do you have any recommendations? Sentence9: There are 2 guesthouses meeting your needs. One in the north and one in the centre of town. Which would you prefer? Sentence10: Yes, please book that room for me. Sentence11: For how many people would the reservation need? Sentence12: Can you let me know if El Shaddai has free wifi? Sentence13: Does the hotel include free parking and does it happen to have a 0 star rating? Sentence14: Alright your reservation is at Yippee Noodle Bar, 40428 King Street City. Confirmation number is 2BGIWWZ6 . I'm also showing an opening at Alexander Bed and Breakfast. Is that okay? Sentence15: I need it for 4 people and I would like a confirmation number. Also, can you help me find a guesthouse hotel in the area with free parking? Sentence16: I'd prefer the one in the centre of town . Sentence17: Yes it does. Sentence18: Will this just be for you? Sentence19: That works okay. Can I get the price range and address? Sentence20: This sunday at 15:45. Question: Who has spoken the sentence 5? (A) User (B) System
Answer: (B) System