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

[Q]: Sentence1: Yes I was able to do this and the reference number is J7S65ALV . Sentence2: Ok. Thank you and good bye. Sentence3: i need information of a hotel called allenbell. Sentence4: I am also looking for an entertainment place. Sentence5: Sure, great guesthouse on the east side. 4 stars but still cheap. Sentence6: Would you like the attraction in the same area as the guesthouse? Sentence7: My favorite is Nusha. It's in the south. Unfortunately, I don't have the information on their entrance fee, but I can give you their phone number, if you like. Sentence8: That would be fine. I think that's all I need. Thanks for your help! Sentence9: That doesn't really matter. What's the entrance fee and area for your favorite entertainment place? Sentence10: Could you make a reservation for 8 people for 5 nights starting Tuesday? I will also need the reference number. Question: Who has spoken the sentence 6? (A) User (B) System
[A]: Answer: (A) User

[Q]: Sentence1: Great I also need a taxi to take me between the two places and get me to the restaurant by 20:00 Sentence2: You are most welcome. May I help you with anything else, such as attractions? Sentence3: The University Arms is a 4 star hotel on Regent Street. Would you like me to make a reservation there? Sentence4: Booking was successful. Reference number is : VJQM2DFY . Anything else I can do for you? Sentence5: Is that in the centre area also, and in the expensive price range? That is what I'm looking for. Sentence6: In the centre, please Sentence7: Perfect!. Thank you for your help! Sentence8: Great, can you book for 1 person and 4 nights starting Wednesday. Sentence9: Have a great day! Sentence10: Yes, University Arms Hotel is a 4-star hotel in the expensive price range. Would you like to make a reservation? Sentence11: There are 33 expensive restaurants in the centre of town. Is there a specific type of cuisine you were looking for? Sentence12: Sure, which part of town did you want to eat in? Sentence13: Booking for the taxi complete look for a grey bmw car contact number is 07434690950 to arrive at the restaurant by 20:00 Sentence14: You have been booked at the Bedouin on Wednesday at 20:00 for 1 person. Your reference number is 29KJKZOD . Is there anything else I can help you with? Sentence15: I'm visiting the centre and want to go all out on the experience. Can you help me find an expensive restaurant? Sentence16: I need a place to stay. Sentence17: no, just surprise me. I need a reservation for 1 person at 20:00 on wednesday. Sentence18: No thanks, that's all I needed. Question: Who has spoken the sentence 15? (A) User (B) System
[A]: Answer: (B) System

[Q]: Sentence1: Nandos is a Portuguese restaurant, it is in the cheap price range, and is on the south part of town. Would you like the phone number? Sentence2: That is all I need. No further questions. Sentence3: You're welcome. Good bye. Sentence4: I would like a restaurant that serves portuguese food Sentence5: OK. Good bye. Sentence6: Cambridge Leisure Park Clifton Way. Can I help you with anything else? Sentence7: what is their address Sentence8: Thank you goodbye. Question: Who has spoken the sentence 5? (A) User (B) System
[A]:
Answer: (B) System