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 see there is a train on Friday that leaves leicester at 14:09 to Cambridge, could you book me a ticket for this train? Sentence2: I have 9 restaurants in that area. May I ask what your budget for lunch is? Sentence3: I have a 12:09 that arrives at 13:54. Would that do for you? Sentence4: The duration of the trip is 105 minutes. Have a great day! Sentence5: Yes, the gandhi is in the cheap price range. Their address is 72 Regent Street City Centre. Would you like me to book a table for you? Sentence6: Hi there, I'm trying to find a train that leaves from Leicester but it must be after 11:15. Can you help me book a ticket? Sentence7: I just need the train ID please. Sentence8: There are three cheap resturants int hat area, kohinoor, the gandhi, and mahal of cambridge. Sentence9: I think that is all for now. Sentence10: Did you only need one ticket? Sentence11: The train ID is TR6247, would you like to book a seat? Sentence12: The train ID is TR8882. Can I help you with anything else? Sentence13: No thank you, their information is enough at this time. Do they have a phone number? Sentence14: The Ghandi sounds nice. Can I get their address? And they are a cheap restaurant, right? Sentence15: Please book me a ticket for that train. Sentence16: Yes, their phone number is 01223353942. Is there anything else I can help you with today? Sentence17: Yes, that would be fine. Could I get the train ID? Sentence18: I need a train from leicester on thursday and should leave after 11:15. Sentence19: No thank you. That's not necessary. Can you help me find an indian restaurant in the centre of town? Sentence20: Nothing expensive please. Question: Who has spoken the sentence 2? (A) User (B) System
[EX A]: Answer: (A) User

[EX Q]: Sentence1: Great! I have booked you a taxi, which will pick you up from the hotel. It will be a yellow Tesla and the contact number is 07140486418. Anything else today? Sentence2: no thank you that is all Sentence3: Could you also book it for me? 3 people, 14:30 on Sunday. Sentence4: Where would you like the taxi to pick you up? Sentence5: Are you sure that you don't want to get to the restaurant for your booked time? Sentence6: I am looking for a place to dine in the centre of town Sentence7: It doesn't matter. We want to eat indian food. Sentence8: Yes,that is it for today. Thanks again. Sentence9: You're welcome, let me know if I can assist with anything else. Sentence10: We have several options. What price range would suit your needs? Sentence11: Sorry, I do need to find a guesthouse as well. Something moderately priced, perhaps 3 stars? Sentence12: May I also have the telephone number for the alpha-milton, please? Sentence13: it should pick me at the restaurant at the booked time Sentence14: the alpha-milton is located in the north. their address is 63 milton road and the postcode is cb41xa. Sentence15: The alpha-milton guest house will fit your needs. Would you like me to be book a room there? Sentence16: Sure, the number for Alpha-Milton Guest House is 01223311625. Can I help with anything else? Sentence17: I have your table booked for Sunday afternoon. They will hold the table for 15 minutes. Your reference number is 28O595TK . Can I help you with anything else? Sentence18: Yes, the address is 106 Regent Street in the City Centre. Their phone number is 01223302330. Can I help with something else? Sentence19: I do need the taxi to get to Curry Garden by the booked time of 14:30. I'm a little scatter brained today. Thank you for clarifying. Sentence20: The prompt before this call came through said that you needed two things, do you need anything regarding a hotel, transport or attractions? Sentence21: Thank you for using our services. Have we met all of your needs today? Sentence22: i also want a taxi to help commute between the two places Sentence23: Well I have the Curry Garden in the expensive price range. Sentence24: No thank you, I just need the address, phone number and area. Sentence25: Please provide me with the address and telephone number. Sentence26: nope, that's all thanks so much! Question: Who has spoken the sentence 16? (A) User (B) System
[EX A]: Answer: (A) User

[EX Q]: Sentence1: You can take train TR8464 to arrive there in time. Would you like me to book it for you? Sentence2: i don't have anything that fits those criteria, would you like me to look for something else? Sentence3: Not a problem. You have a great day, as well! Sentence4: Your room has been booked. Your reference number HPLM0SM6 . Sentence5: Sure! For how many people? Sentence6: I'm looking for a train leaving cambridge on sunday. Sentence7: I'll be glad to help you with that. What area would you like to stay in? Sentence8: I am also looking for a place to stay. Sentence9: Can you try those same things but in the moderate price range? Sentence10: I can help with that. What is the destination and what time would you like to leave? Sentence11: Great, that's all I need, thanks so much for your help! Have a great day! Sentence12: Here is the booking information:Booking was successful, the total fee is 71.68 GBP payable at the station . Reference number is : FCZJMTAI . Sentence13: Somewhere in the north, with 4 stars, free parking, and expensive. Sentence14: That bring sup six results, I recommend the home from home guesthouse, would you like more info or a booking? Sentence15: 2 people and 1 dog Sentence16: Yes, could I book one for 4 nights starting from Wednesday? Sentence17: I would like to go to stevenage by 14:00. Sentence18: Yes please book it for 7 people and provide the reference number. Question: Who has spoken the sentence 7? (A) User (B) System
[EX A]:
Answer: (B) System