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

[Q]: Sentence1: That is all, thank you, goodbye. Sentence2: Is there anything else we can help you with? Sentence3: Goodbye. Sentence4: Ok. Thanks. Sentence5: I am looking for a restaurant in the south part of town and serving portuguese food. What is the address and phone number? Sentence6: Nandos is a portuguese restaurant in the south part of town. Their address is Cambridge Leisure Park Clifton Way and their phone number is 01223 327908 Question: Who has spoken the sentence 2? (A) User (B) System
[A]: Answer: (A) User

[Q]: Sentence1: Great, have a wonderful day and enjoy your taxi ride, thank you! Sentence2: What time would you like to arrive? Sentence3: No, that is all I need today. Thanks! Sentence4: i want to book a taxi. The taxi should depart from la Margarita and should go to riverboat Georgina. Sentence5: I have a white tesla booked. The contact number is 07032807056. Anything else today? Sentence6: I would like to arrive by 17:15. Question: Who has spoken the sentence 2? (A) User (B) System
[A]: Answer: (A) User

[Q]: Sentence1: I will take Graffiti. Can you make a reservation for Tuesday for 8 people at 14:30 please? Sentence2: That time is unavailable. Please choose another time? Sentence3: That's all I needed thanks. Sentence4: No that doesn't sound good, I need one that serves north african food. Sentence5: Actually, can you help me find a restaurant? An expensive one in the West. Sentence6: Can you search for one that has british food then? Sentence7: Thank you and have a great day! Sentence8: There are none that serve north african food Sentence9: It is in the North area, the address is Cambridge Passenger Cruisers, Jubilee House. Phone number is 01223902091 Sentence10: I'm looking for info about riveboat georgina Sentence11: There are two british places, graffiti and travellers rest, do you have a preference? Sentence12: Certainly. I recommend Tandoori Palace. They serve expensive Indian food in the west. Were you looking for reservations? Question: Who has spoken the sentence 7? (A) User (B) System
[A]:
Answer: (B) System