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

Q: Sentence1: yes book for 4 people and 5 nights from sunday Sentence2: I hope you have a great stay. Goodbye. Sentence3: I would prefer a college in town centre. I'll need the phone and address also. Sentence4: I am also looking for a place to stay in the centre. Sentence5: No that will be it thank you for your help. Sentence6: Booking was successful. Reference number is : 7RA903FR . Can I help with anything else today? Sentence7: Ok, there are 13 to choose from. Some have entrance fees. Sentence8: I'm looking for an attraction in the category of college in the center of town Sentence9: I have the cityroomz hotel in the center. Would you like me to make a booking for you? Sentence10: Moderate range please. Sentence11: What price range you would like? Sentence12: Sure thing, Downing college is located at regent street and phone is 01223334860 anything else I can assist with? Question: Who has spoken the sentence 11? (A) User (B) System

A: Answer: (B) System
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Q: 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

A: Answer: (B) System
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Q: Sentence1: Yes, I would also like the reference number for the booking please. Sentence2: Okay, how many tickets would you like? Sentence3: I'm heading to Broxbourne. Sentence4: TR2125 leaves at 09:01 and arrives at 10:01. Would you like me to book that for you? Sentence5: Yes there are. What is your destination? Sentence6: No, I think I'm all set. Thank you very much for your help! Sentence7: We have trains leaving hourly from Cambridge to Broxbourne, starting at 5:01 for 17.90 pounds. What time would you like to leave? Sentence8: Have a great day! Sentence9: I need that for 6 people. Sentence10: Are there any trains leaving from Cambridge on Thursday? Sentence11: You have 6 tickets on TR125 leaving Thursday at 9:01. Reference number is PPP9YI7K . 107.4 GBP will be payable at the station. Can I help you further? Sentence12: I am looking for one that will arrive by 15:00 Question: Who has spoken the sentence 4? (A) User (B) System

A:
Answer: (A) User
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