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

[Q]: Sentence1: Are there any with a 5 star rating? Sentence2: I'm looking for a place to stay with free wifi. Can you help me find something moderately priced? Sentence3: You are booked at the acorn guest house. Reference number is ROCCFCM6 . Sentence4: Thank you so much, that is all I need. Sentence5: Unfortunately, none of them have a 5 star rating. Sentence6: Are there any with a 4 star rating? Sentence7: We have plenty of moderately priced options with free WiFi. Do you have any additional preferences? Sentence8: Oh yes, several. Are there any addition preferences on those? Sentence9: Great, enjoy your stay. Bye. Sentence10: Nope, any 4-star moderate place with wifi will be fine. Could you book a room starting Saturday for 3 nights, 5 people? Question: Who has spoken the sentence 6? (A) User (B) System
[A]: Answer: (A) User

[Q]: Sentence1: Thanks for using our services. Sentence2: I would prefer moderate price range. Sentence3: Got everything. Thanks. Goodbye. Sentence4: The restaurant is called meghna. The postcode is cb43lf, the address is 205 Victoria Road Chesterton. Anything else? Sentence5: Are there any Indian restaurants there? Sentence6: no, I just need to know the postcode. Sentence7: WHich price range do you want? I have expensive and moderate. Sentence8: Yes, there are 22. What area would you like to dine in? Sentence9: I want to dine in the west. Sentence10: I have found one, Can I make a booking for you? Question: Who has spoken the sentence 5? (A) User (B) System
[A]: Answer: (B) System

[Q]: Sentence1: Yeah, maybe...but first, can you give me some ideas of places to go? I'm interested in some nightclubs in the centre. Sentence2: I would like to suggest the ballare. Do you need any information on it? Sentence3: I found two guest houses matching your request. Would you like to try the Aylesbray Lodge Gest House located at 5 Mowbray road? Sentence4: Absolutely! The entrance fee is 5 pounds and the phone number is 01223364222. Sentence5: There are quite a few options. Do you have a preferred price range and location? Sentence6: I would like to stay in a 4 star rated guesthouse. Sentence7: Yes both of those guesthouses have internet. Should I make a reservation? Sentence8: Do they have internet? Sentence9: Thanks! That's all I needed. Sentence10: You're most welcome. Enjoy! Sentence11: Yes! Can I have the phone number and entrance fee please? Sentence12: I'm not concerned with price, but we really would like to stay on the south end of the city if possible. Question: Who has spoken the sentence 4? (A) User (B) System
[A]:
Answer: (A) User