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

[Q]: Sentence1: Yes please, two people for two nights on sunday. Sentence2: Yes! Can you book for 2 people at 14:15 on this Sunday? Sentence3: Reference number is : E9BM21NJ . Is there anything else I can assist you with? Sentence4: Are you sure there is nothing more I can help with today? Sentence5: Great that will be all we need. Sentence6: Can you help me find a place to eat in the expensive price range in the south part of town? Sentence7: I have one matching result. It is the lensfield hotel. Do you want to reserve a room? Sentence8: I was able to book your party of 2 into The Chop House on Sunday at 14:15 Reference: MUWLBLLW . May I assist with more today? Sentence9: What about the cambridge chop house. The address is: 1 Kings Parade. You you like me to book a table? Sentence10: Do you have a reference number? Sentence11: This time that is everything, thank you for your help. Sentence12: Actually yes I will be needing somewhere to stay too please. A 3 star hotel in the same area and price range as my restaurant. Sentence13: You are welcome enjoy. Sentence14: Ok, I've booked the Lensfield Hotel for you for 2 people and 2 nights starting Sunday Question: Who has spoken the sentence 4? (A) User (B) System
[A]: Answer: (A) User


[Q]: Sentence1: Can you recommend a moderately priced restaurant in the South part of town? Sentence2: could i have the address and phone number please? Sentence3: sure, pizza hut cherry hinton is located at G4 cambridge leisure park clifton way cherry hinton and the phone number is 01223 413000. Is there anything else I can help you with? Sentence4: Would you prefer Italian or Modern european food? Sentence5: I don't care. Either one is fine. Sentence6: No, that is all I needed. Thank you. Bye bye. Sentence7: How about Pizza Hut Cherry Hinton. It serves Italian food, is in the moderate price range, and in the south part of town. Sentence8: Goodbye. Question: Who has spoken the sentence 5? (A) User (B) System
[A]: Answer: (B) System


[Q]: Sentence1: Their postcode is CB11JG. Sentence2: I'm looking for a place, I believe its official name is "Parkside Police Station". Sentence3: Ok, thank you very much for your help. Sentence4: The Parkside Police Station is located at Parkside, Cambridge and their telephone number is 01223358966. Can I help you with anything else today? Sentence5: What is their postcode? Sentence6: You are most welcome! Question: Who has spoken the sentence 5? (A) User (B) System
[A]:
Answer: (B) System