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

Example Input: Sentence1: What is your departure point? Sentence2: What time do you need to leave by? Sentence3: I am looking for a train to cambridge. I would like something on sunday to arrive by 18:30 Sentence4: I just want to get there at or shortly before 18:30. Sentence5: I'd like to recommend whipple museum of the history of science, at free school lane. Admission is free. Sentence6: Yes it is their full address and the postcode is cb23rh and their telephone number is 01223330906. May I help you with anything else today? Sentence7: Thank you. That is all that I need. Sentence8: i place want a place to go in the centre Sentence9: I found the perfect train! TR7771 will get you there at 18:24. Would you like me to book this for you? Sentence10: Ok, your booking is complete for 6 people. The cost is 79.19 GBP, payable at the station. The reference number is 8W0OSFM6 . Sentence11: I would like a museum in the centre please. Sentence12: What are you into? Do you like theatre? Museums? We have plenty of attractions in the centre and if you tell me what you enjoy I can recommend one Sentence13: My departure will be from Cambridge. Sentence14: Okay. Glad I could be of help. Sentence15: Is that the full address for the museum? Free School Lane? Sentence16: I need to go to Peterborough. Sentence17: Yes, please book me for 6 people. My birdwatching club is taking a trip together. Sentence18: And what is your destination city? Question: Who has spoken the sentence 6? (A) User (B) System
Example Output: Answer: (A) User

Example Input: Sentence1: Can I help you with anything else today? Sentence2: I am looking to get an address and entrance fee for a theatre. Can you search for one for me using the criteria I mentioned earlier? Sentence3: There is no specific area. Sentence4: Entrance fee is not mentioned. There are no restaurants in that area that fit your criteria. Is there something else I can look up for you? Sentence5: Yes, get me a table for 3 at 15:30 on Saturday. Sentence6: Fantastic, have a great day! Sentence7: Is there a entrance fee? I am also looking for a cheap north american restaurant to dine at on the east side. Any recommendations? Sentence8: No that will be all! Thank you! Sentence9: Hi, can you please give me information on theatres in town? Sentence10: The Missing Sock is an international restaurant in the East and has a cheap price range. Would you like a reservation? Sentence11: I have made those reservations and the reference number is Y40MJDC0 . Sentence12: I have 5 theaters located in the centre and south which area would you like? Sentence13: Are there any serving international cuisine in the same area and price range? Sentence14: Great, thanks for your help! Sentence15: I see. What sort of information can I help you with? Sentence16: The address for adc theatre is park street. Question: Who has spoken the sentence 7? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: Yes, can I have more information about the Cambridge Museum of Tech? What is their address? Sentence2: Can I also get a phone number and postcode for the museum? Sentence3: Done! Your reference number is SY4TL1W6 . Do you need anything else? Sentence4: No problem. Will there be anything else? Sentence5: Yes! I know we have 33 in town. Do you need to book one of them? Sentence6: Do you know much about hotels? Sentence7: That's all thank you for your help. Sentence8: The Cambridge Belfry is a cheap hotel in the west. Would you like their address? Sentence9: their phone number is 01223368650 and their postcode is cb58ld Sentence10: Yes! Cambridge Artworks, Cambridge Museum of Tech, Gallery at Twelve and Saint Barnabas Press Gallery. Any interist? Sentence11: No that is it. Thank you. Sentence12: How about a cheap 0 star hotel with free parking? Sentence13: I'm also looking for a museum in the east. Any recommendations? Sentence14: There are 10 cheap hotel's in town. Would you like to be in the North, South, East, West, or Central location? Sentence15: Unfortunately there are no hotels matching that criteria. Would you like for me to search for 2, 3 or even 4 star hotels? Sentence16: Address is the old pumping station, cheddars lane Sentence17: sorry, what is the address? Sentence18: Ok that works please make reservations for 3 people and 3 nights starting from saturday. Sentence19: Absolutely, their address is the old pumping station, cheddars lane. Is there anything else I can assist yo with today? Sentence20: No problem, glad to help. Have a great weekend. Sentence21: The el shaddai may be a good choice for you. Sentence22: Lets start over, my apologies. We were actually looking for a moderate priced hotel, with 0 stars and free parking, disregard everything said before this. Sentence23: Yes please,the cheapest one,thank you Sentence24: I would like to stay in the west please. Can you send me some info? Question: Who has spoken the sentence 18? (A) User (B) System
Example Output:
Answer: (A) User