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

Q: Sentence1: The Cambridge Belfry is a hotel on the west side and is inexpensive. Their phone number is 01954714600. Sentence2: Can I get their postcode please? Sentence3: What can you tell me about Finches Bed and Breakfast? What area are they in? Sentence4: Yes, I'll also need a taxi to commute between the two places. I'll need to arrive at the restaurant by the dining time. Sentence5: Chiquito restaurant and bar is in the south area, what time would you like me to book your 4 people for? Sentence6: That's great. Everything is set. Thank you for helping me. Goodbye. Sentence7: i booked your taxi. it will be a blue lexus coming. their phone number is 07566783718. Sentence8: The table has been booked. Your reference number is PQPB99PP . Can I help you with anything else? Sentence9: You're welcome, have a great day! Sentence10: yes four people for Friday at 17:30 Sentence11: Postal is cb30nd, and if you need to call them they can be reached at 01223276653, any thing else that I can assist with? Sentence12: Okay, how about Mexican food in the south? I'll be needing a table for 4 this Friday. Sentence13: finches bed and breakfast Is in the west, it is cheap, 4 star guesthouse, free internet and parking. Do you need anything else? Sentence14: I would like an inexpensive hotel on the west side of town. Question: Who has spoken the sentence 1? (A) User (B) System

A: Answer: (B) System
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Q: Sentence1: I'm sorry. I changed my mind. I don't want a guesthouse. Are there any hotels with 2 stars? Sentence2: Great that was all I needed today, thank you. Sentence3: Is there a particular area you would like to stay in? Sentence4: There isn't a guesthouse with 2 stars and free internet available. Is there another type of hotel I can look up for you? Sentence5: Great Glad I could be of help to you. Sentence6: I have you booked in the Ashley hotel. Your reference number is CW6YMT0B . Is there anything else I can do for you today? Sentence7: No, just any 2-star hotel with free wifi will do. Sentence8: Hi, I need a guest house please. Sentence9: Do you have a specific location you want to be? Sentence10: No, but I need free wifi and I would like a 2 star guesthouse please. Sentence11: I have 3 guesthouses all in the moderate price range. Would you like me to choose one for you? Sentence12: I found 3 for you all in the expensive price range. Can you please give me the details so that I may book it for you? Sentence13: Yes, how about a guesthouse with 3 stars and free wifi instead? Sentence14: I would like it for 6 people for 2 nights starting on Wednesday. Question: Who has spoken the sentence 11? (A) User (B) System

A: Answer: (B) System
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Q: Sentence1: I'm sorry, there aren't any German restaurants in the centre, would you like me to expand the search to other parts of town? Sentence2: you're welcome, goodbye! Sentence3: There are 5 trains that will get to Cambridge by 10:30. The earliest departs Kings Lynn at 05:11. The latest one leaves at 09:11. Sentence4: Yes, there is. What's your price range? Sentence5: The 9:11 one is cool. I need to book for 7 people. Can I make sure to get the reference number? Sentence6: Expensive price range and I need a table for 7 at 13:00 on Thursday and the reference number. Sentence7: and what time do you need to leave? Sentence8: I will be leaving from kings Lynn. Sentence9: your all set reference # is 79REVFJ1 . anything else today? Sentence10: Thank you, thats all i needed. Sentence11: Ok great. Where will you be departing from? Sentence12: Yes I'm looking for a train to Cambridge that same day. Sentence13: I haven't had German food in ages so please find me a place in the centre that serves it Sentence14: Sure, but please make sure there aren't any in the centre again too. Sentence15: I just need to arrive by 10:30. Sentence16: Booking was successful, the total fee is 68.6 GBP payable at the station . Reference number is : H6VTWBV8 . What else can I do for you today? Sentence17: is there one that serves italian food? Sentence18: Goodbye and have a great day. Sentence19: There aren't any options for German food for any area, I'm afraid. Would you like to try a different type of food? Sentence20: thanks for inquiring with us. Question: Who has spoken the sentence 15? (A) User (B) System

A:
Answer: (B) System
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