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

[EX Q]: Sentence1: I don't have a preference. Can you recommend one? Sentence2: Thank you that's all the help I need. Goodbye Sentence3: I can work on booking this for you. Sentence4: Sounds great, thanks. I am also looking for a restaurant in the Centre that serves gastropub food. Sentence5: I'm looking to visit a museum in Cambridge. Can you tell me a little about what you have? Sentence6: I would also like to book a taxi to get between the museum and the restaurant. Sentence7: I will make a booking for backstreet bistro,Booking complete here is your reference number T9TB8FBO . Sentence8: I need to arrive at the restaurant by 14:45. I'll need the contact number and car type as well please. Sentence9: Sure. Is there anything else I can assist you with today? Sentence10: It really doesn't matter money is no object. I need a table for 8 on thursday at 14:45. As long as its a gastropub in the centre of town Sentence11: Okay I have booked your taxi. The contact number is 07498867892 and the car is a blue tesla. Sentence12: Cambridge Artworks is a great place and has free entry. Their address and phone number is 5 Greens Road 01223902168. Sentence13: awesome! thanks for all the info Sentence14: There are 23 museums that match that criteria. What area should the museum be in? Sentence15: Okay, there are 3 different restaurants. What is your price range? Sentence16: Thanks for using our service today! Question: Who has spoken the sentence 7? (A) User (B) System
[EX A]: Answer: (B) System

[EX Q]: Sentence1: I am also looking for Cambridge Contemporary Art. Sentence2: Can you give me their entrance fee and phone number? Sentence3: Maybe. What is the star rating and price range on that hotel? Sentence4: Are there any available rooms in the Autumn House? Sentence5: You're welcome. Enjoy your stay. Sentence6: You are all set. Your taxi would be a red lexus and you can contact them at 07614169632. Is there anything else I can help? Sentence7: no problem. Their phone number is 01223324222 and the entrance fee is free. Sentence8: Sure, I have found it for you. Is there anything you want to know about? Sentence9: That's all i need. Thank you so much for the help! Sentence10: Autumn house has a guesthouse. When are you looking to stay? Sentence11: it has four stars and its cheap Sentence12: Awesome. Can you also help me to book a taxi from the hotel to the attraction? I want to leave the hotel by 24:45. Question: Who has spoken the sentence 5? (A) User (B) System
[EX A]: Answer: (B) System

[EX Q]: Sentence1: Yes please bookm it for me and I need the departure time. Sentence2: Certainly. Did you have a destination in mind? Sentence3: That sounds great! What is their address? Sentence4: You are welcome. Please let us know if you ever need assistance with anything else. Sentence5: Yes London Kings Cross. Sentence6: Great. Now what time would you like to leave by or arrive by? Sentence7: Arrive by 10:30 in London Kings Cross. Sentence8: How many tickets do you need? Sentence9: Just one please Sentence10: Thank you! That will be all. Sentence11: TR8636 will arrive by 09:51, would that work for you? Sentence12: OK perfect, I have that booked for you then, is there anything else I can help you with? Sentence13: It is located on herschel road and the phone number is 01223332360 Sentence14: I also need a college to go to in the west. Sentence15: Hi, I'd like a train leaving from Cambridge on Thursday, please. Sentence16: I have 5 different options for you. Might I suggest Clare Hall. It has free admission and it is a great campus to tour. Question: Who has spoken the sentence 11? (A) User (B) System
[EX A]:
Answer: (B) System