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

[Q]: Sentence1: Thank you! That is all I need. Sentence2: You are very welcome! Sentence3: Yes, I'm calling regarding Addenbrookes Hospital. What is the address please? Sentence4: The Addenbrookes Hospital is located at Hills Rd, Cambridge Postcode CB20QQ. Question: Who has spoken the sentence 1? (A) User (B) System
[A]: Answer: (B) System


[Q]: Sentence1: Can you book a table at the Bistro for me? 4 people at 13:30 on Sunday, please. Sentence2: I am looking for a place to eat that's expensive and serves Belgian food. Sentence3: I just need the arrival time and price. Sentence4: I have two, the backstreet bistro and the slug and lettuce. Do you have a preference between the two? Sentence5: Yes, what time do I need to be at the station? Sentence6: How about somewhere expensive in the centre? Sentence7: Booking was successful. The table will be reserved for 15 minutes. Reference number is : NSLKEI1G . Sentence8: I want to leave after 10:30 on Monday. Sentence9: The TR8089 meets your criteria. Would you like to book tickets? Sentence10: You're welcome, have a good day. Sentence11: no such restraunts too Sentence12: Thanks! I also need a train from Cambridge to Ely, please. Sentence13: what time will you be departing? Sentence14: I should be asking you what time you need to be at the station. Sentence15: The arrival time for train TR8089 is 12:07, and it will cost only 4.40 pounds. Is there anything else I can help with? Sentence16: I'm sorry, we don't have any Belgian restaurants. Would you like to try a different type? Sentence17: That was everything. Thanks very much! Sentence18: How about a gastropub restaurant? Question: Who has spoken the sentence 1? (A) User (B) System
[A]: Answer: (B) System


[Q]: Sentence1: There are 133 trains that match that trip. To narrow it down, I need to know what day you'll be traveling and when you want to arrive by. Sentence2: Great can you help me get a train from cambridge to broxbourne? Sentence3: We have three places, but I like the hotpot. Do you need a reservation? Sentence4: Thanks! That's all I needed today. You've been a great help! Sentence5: The Hotpot is a moderately priced restaurant. Their post code is cb41ep. Sentence6: Great. I have booked one ticket on TR5256 to broxbourne. The cost will be 17.89 GBP and your reference number is O9VNFTK9 . Sentence7: I have train TR5256 that leaves at 20:01 and arrives in Broxbourne at 21:01. Would that work for you? Sentence8: You're welcome! Enjoy your travels. Sentence9: Could you tell me the price range first? and the postcode? for the hotpot? Sentence10: That would be great. I'm traveling alone so just one seat please. Sentence11: I'm looking for a restaurant on the North end that serves yummy Chinese food Sentence12: I will be traveling on Wednesday and I would need to arrive in Broxbourne by 21:15. Question: Who has spoken the sentence 4? (A) User (B) System
[A]:
Answer: (A) User