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

Ex Input:
Sentence1: If you can go ahead and recommend one and provide me with the phone number and address please. Thanks so much. Sentence2: I would like to book a train to Leicester that leaves on Saturday. Sentence3: That's all for today. Thank you for your help! Sentence4: Would you like to book a seat on TR1832? It will leave at 15:21 and arrive at 17:06, 105 minutes later. It will cost 30.24 pounds. Sentence5: sure, there are several in that area. including art galleries and history museums. Sentence6: Yes, do you have a certain time you'd like to leave or arrive by? Sentence7: broughton house gallery is located at 98 King Street and their phone number is 01223314960. Do you need anything else? Sentence8: Thank you for calling today. Sentence9: I'd like to leave after 15:15 please. Sentence10: In the centre, please Sentence11: Booking was successful, the total fee is 30.24 GBP payable at the station. Your reference number is VHWYUF80 Sentence12: What area are you interested in? Sentence13: i also want to check out some museums while i'm in town. Sentence14: Yes, can you please book that for me and send me a reference number. Thank you Question: Who has spoken the sentence 12? (A) User (B) System

Ex Output:
Answer: (A) User

Ex Input:
Sentence1: Yes, what type of attraction is Cherry Hinton Water Play? Sentence2: Please book it and send me the confirmation code. Sentence3: Again thank you and have a great day. Sentence4: Thanks I'm also looking for a train that leaves on Thursday. Sentence5: Just one seat. Sentence6: OK, what are your departure and arrival stations, and what time do you want to travel? Sentence7: Before i book it, could you confirm the number of seats you need? Sentence8: You're welcome! Is there anything else I can help you with? Sentence9: It is a park. Sentence10: Excellent, I can't wait to visit it! Thank you. Sentence11: I am looking for information about the the Cherry Hinton Water Play Sentence12: excellent, have a great day! Sentence13: I'd like to go to Cambridge via Broxbourne. I'd like to leave on Thursday and arrive no later than 12:00. Sentence14: That is a free park on the east side of town. They are located at Cherry Hinton Hall on Cherry Hinton Road. Their phone number is 01223446100. Sentence15: I have on that arrives at 11:32. Would you like me to book that for you? Sentence16: Perfect thanks for the help thats everything I need! Sentence17: Well I glad i can help enjoy your stay ! Sentence18: Your booking was successful! The reference number is 698RE4W1 . The total fee of 17.89 is payable at the station. Question: Who has spoken the sentence 17? (A) User (B) System

Ex Output:
Answer: (B) System

Ex Input:
Sentence1: What is your price range? Sentence2: book for 5 people and get me the reference number Sentence3: Could you try the moderate price range to see if there are any available? Sentence4: I need to find a place to stay that has 4 stars and has free wifi Sentence5: Great. Are you looking for a train, hotel or attractions to visit while in Cambridge? Sentence6: Congratulations, you are all booked! The total fee is 189 GBP payable at the station.Your reference number is : RR4BSBW5 . Is there anything else I can do? Sentence7: Sorry there is no guesthouse fitting the description you asked for Sentence8: It should be expensive and a guesthouse. Sentence9: You're welcome. Is there anything else I can do for you? Sentence10: I am planning a trip in Cambridge. Sentence11: No thank you, I appreciate your help today. Sentence12: Yes there are 11. I recommend the Acorn Guest House. Would you like a reservation? Sentence13: I need a train that leaves Cambridge on Wednesday to arrive in Leicester by 12:15 please. Sentence14: Sure, for 5 people for four nights starting Wednesday. Sentence15: the TR9366 train arrives at 12:06. Sentence16: Thank you for your help. Sentence17: Okay I have booked that and your reference number is HUH8HH95 . Sentence18: Your welcome, have a great day! Question: Who has spoken the sentence 10? (A) User (B) System

Ex Output:
Answer: (A) User