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

[EX Q]: Sentence1: We have 13 trains meeting your criteria. Do you have any idea how early you want to leave? The first train leaves at 11:32 and then every hour after that Sentence2: Are there any cheap options in the centre of town? Sentence3: We can take care of that too, but let's get your restaurant squared away first - in order to provide an address I'll need to know what type of cuisine? Sentence4: Whichever one you think is best please. Sentence5: to cambridge from broxbourne. i need to leave after 11:15 please Sentence6: Where will you travel too and from? Sentence7: Thank you for using the Cambridge TownInfo centre. Goodbye. Sentence8: excellent. I will need the train booked for 5 as well. Sentence9: It has been booked. You reference number is UCICW103 . Sentence10: I recommend the Dojo Noodle Bar. They're located at 40210 Millers Yard, City Centre. Sentence11: I will be traveling on Sunday. Sentence12: Hi. Can you help me find a restaurant? Sentence13: and what day will you be traveling on? Sentence14: The train should leave broxbourne after 11:15 so the 11:32 is a good choice. There are 5 of us traveling together. Please book. Sentence15: There are a lot of options in Cambridge. Can you please be more specific? Sentence16: Yes, there are chinese, asian oriental, indian, italian, spanish, portuguese, modern europe, and mediterranean available. Sentence17: Great. Thank you so much. Sentence18: Can I have the address? I am also looking for a train that leaves on Sunday to Cambridge. Question: Who has spoken the sentence 16? (A) User (B) System
[EX A]: Answer: (A) User

[EX Q]: Sentence1: Sure, that post code is cb39al. Can I further assist you? Sentence2: I'm interested in visiting colleges while in town, can you please recommend some? Sentence3: I can recommend clare hall and christ's college. You need phone numbers for either one? Sentence4: Okay the TR5009 leaves at 18:40. Sentence5: Yes I also need a train to stansted airport on sunday Sentence6: That sounds great, do I call to book a seat or can you help me? Sentence7: No, thanks. That's all I needed. Sentence8: I'm glad I was able to help you. Thanks for using our service have a nice day. Sentence9: Sure. Where will you be departing from, and what time? Sentence10: Please book for 6 people. Sentence11: I am leaving from Cambridge. I would like to leave sometime after 18:00. Sentence12: I would like the post code for clare hall please. Sentence13: I would be more than happy to help you book! Tickets are 8.08 pounds. How many tickets would you like me to book for your trip? Sentence14: Booking was successful, the fee is 48.48 GBP payable at the station . Reference number is 4ESBHTB0 . Is there anything else I can help you with? Question: Who has spoken the sentence 7? (A) User (B) System
[EX A]: Answer: (B) System

[EX Q]: Sentence1: Yes I do. I want to leave the hotel by 24:45 to go to the park. Sentence2: The phone number for Wandlebury Country Park is 01223243830. Do you any further assistance today? Sentence3: Unfortunately all we have is the aylesbray lodge guest house Sentence4: Hello, I am looking for a hotel in the south that is moderately priced. Sentence5: Do you mean that you want to book a taxi? If so, what will your destination be? Sentence6: Wonderful. Can you provide me with the contact number? Also, what kind of car is it? Sentence7: Of course, sorry about that. Look for a red Lexus. The contact number is 07951076280. Can I be of further assistance today? Sentence8: There's one with 3 stars - Bridge Guest House. It's in the south and is moderately priced, and they have free wifi and parking. Would you like to book a room? Sentence9: Yes, I'm also looking for info on Wandlebury Country Park. Sentence10: I can't find any hotels, but I did find a guesthouse called aylesbray lodge guest house with that criteria. Sentence11: Okay, do you have any hotels with a 3 star rating instead? Sentence12: thanks. i want to leave the hotel by 24:45. Sentence13: I'd prefer a hotel. It should have a 4 star rating. Can you check again, please? Sentence14: Nope, that's it. Thanks! Sentence15: Very please to have been of assistance today. Sentence16: I was able to book your party of 6 into Bridge Guest House for 2 nights starting Thursday! Reference: GAAQJAQQ . Can I help more today? Sentence17: Can you give me their phone number please? Sentence18: I guess that's fine, book it for 6 people for 2 nights, We'll be there on thursday. Sentence19: Wandlebury Country Park is located at wandlebury ring, gog magog hills, babraham. Is there any other information you need today? Sentence20: Your taxi will be available and has been booked. Question: Who has spoken the sentence 14? (A) User (B) System
[EX A]:
Answer: (A) User