You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
--------
Question: Sentence1: It does not matter, I just need one available for 7 people at 18:15 on thursday Sentence2: I'm sorry, nothing is coming up for that particular type of restaurant. Is there any other specifics you may like? Sentence3: The reference number is DVDLH9NK . Is there anything else I can help you with? Sentence4: Unfortunately I could not find any guesthouses meeting those requirements. Sentence5: How many stars is Cityroomz? Sentence6: Before I can book your taxi, what time are you wanting to leave or arrive by? Sentence7: Fantastic. Enjoy your trip! Sentence8: Not yet. I would like you to book a taxi for me between my hotel and restaurant. I will need the car type and contact number. Sentence9: It has a zero star rating, is this ok? Sentence10: I also need the reference number please. Sentence11: I just want to be sure it arrives by the booked time at the restaurant. Sentence12: Cityroomz is the only place that matches your criteria. Sentence13: That is fine. Do they have internet? Sentence14: I have made a reservation at restaurant alimentum for you. Your table will be reserved for 15 minutes. The address is 152 - 154 Hills Road. Sentence15: How about one that serves modern european food? Sentence16: Thank you very much for your help! That was everything I needed. Sentence17: How about a hotel type? Sentence18: There are 3 restaurants serving modern european food, would you prefer one on the south side or town centre? Sentence19: Yes, Cityroomz has internet. Would you like to book it? Sentence20: Booked. Your car type is white skoda and contact number is 07075801794 Sentence21: Can you find me restaurant with moderate prices that serves north indian cuisine? Sentence22: Yes, I also need a guesthouse hotel with moderate prices in the centre. I don't need free parking. Question: Who has spoken the sentence 15? (A) User (B) System

Answer: Answer: (B) System

Question: Sentence1: Yes I need a table for two. Sentence2: No there isn't. Sentence3: What day and time would you like the booking for? Sentence4: Zizzi Cambridge please Sentence5: I'm sorry could you confirm what restaurant you wanted to reserve a table for 2 at? Sentence6: That sounds good can you please give me the address and phone number? Sentence7: thanks for booking the reservation. Goodbye. Sentence8: How about this Tuesday at 17:00? I can check if they have any available tables. Sentence9: Sure thing! Zizzi Cambridge contact info: Phone: 01223365599 Postcode: cb21ab Address: 47-53 Regent Street. Would you like me to make a reservation there? Sentence10: Sure that sounds good. Sentence11: There are 5 cheap Italian restaurants. Is there a particular area you're interested in? Sentence12: Hello I am looking for a restaurant that serves Italian food and I need it to be cheap. Sentence13: How about something local, such as Zizzi Cambridge? It's located at the centre. Sentence14: I don't know. Question: Who has spoken the sentence 7? (A) User (B) System

Answer: Answer: (B) System

Question: Sentence1: There will be 6 of us. 16:15, if possible. Sentence2: No I do not can you recommend one please? Sentence3: OK, your table is booked, ref#1GRC21JW . Is there anything else I can help you with today? Sentence4: yes! from where will you be departing? Sentence5: i will need to arrive by 19:00 on monday. Sentence6: There are 33 places in Centre that meet that criteria, do you have a specific cuisine in mind? Sentence7: How about the Bedouin? They serve African cuisine. Sentence8: That would be perfect if it is in expensive range. I need to book it for sunday. Sentence9: I will go from Cambridge to Stansted Airport. Sentence10: great, how many people will be in your party? Sentence11: What time do you need to leave or arrive by? Sentence12: Yes, please give me the price. Sentence13: it will cost 10.10 pounds Sentence14: Thank you that is all I need. Sentence15: Are there any high end restaurants within the centre of town? Sentence16: Thanks for letting us assist you today! Enjoy your trip! Goodbye. Sentence17: The TR3571 can get you there by 18:08, is that ok? Sentence18: Yes, can you help me find a train to get me to the Stansted Airport on Monday? Question: Who has spoken the sentence 9? (A) User (B) System

Answer:
Answer: (B) System