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

Ex Input:
Sentence1: How about a swimming pool in the same area? Sentence2: I need a place in the east, please. Sentence3: That would be express by holiday inn cambridge. Would you like to book that? Sentence4: No, actually I do need to book the Holiday Inn Cambridge as long as it has free wifi. Sentence5: Um, no thank you. I think that's all I need for today! Sentence6: Thanks, do you know of any colleges near the hotel? Sentence7: Unfortunately I'm not finding any colleges near the hotel on the east side of town. Would you like me to expand my search to another area? Sentence8: The holiday inn cambridge has internet but I do not have any information on whether or not it is wifi or free. Sentence9: Great. Thank you very much for contacting Cambridge Towninfo Centre. Have a great day. Sentence10: Can we go ahead and book that for 5 people for 3 nights starting on Saturday? Sentence11: Can I get the entrance fee and phone number for the Abbey Pool please? Sentence12: We have 5 hotels that meet your request. Is there a specific area you'd like to stay in? Sentence13: Their phone number is 01223902088, and their entrance fee is not listed in our system at this time. Sentence14: Okay, I have you booked for three nights starting on Saturday. Your reference number is PDMS5WA1 . Sentence15: Thank you for using our service. Have we met all of your needs? Sentence16: I'm looking for a hotel in the expensive price range. Internet is not necessary. Sentence17: Yes! The Abbey Pool and Astroturf Pitch is on the east side of town, at pool way, whitehill road, off newmarket road. Can I help with anything else? Sentence18: Ok. That's all I need then. Question: Who has spoken the sentence 13? (A) User (B) System

Ex Output:
Answer: (B) System


Ex Input:
Sentence1: I'm also looking for a train. It should depart Cambridge after 14:15 and arrive in Norwich on friday. Sentence2: I have a 3 star hotel and a 4 star hotel both in the centre. Would you like to book one of them? Sentence3: I'm looking for a hotel to stay at. I want it to be at least 2 stars and in the center of town. Sentence4: TR8314 departs Cambridge at 14:36 and arrives in Norwich at 15:55. Would you like me to book a ticket for you? Sentence5: 1 ticket on TR8314 has been booked. Your total is 17.6 GBP, which you can pay at the station. Your Reference number is : H0JS8RMF . Sentence6: I am not finding a 2 star in the centre. Are you sure there is not another type of hotel you would like? Sentence7: Do you have anything that is 2 star rated in the centre? Sentence8: YES PLEASE. FOR 1 PERSON. Sentence9: I have 2 options - one is cheap and one is expensive. Which price range would you prefer? Sentence10: Thank you for calling. Have a great day! Goodbye. Sentence11: I do need a place to stay, so are there any 4 star hotels available? Sentence12: we got none. can i help you with anything else? Sentence13: That is all I need. Sentence14: cheap will work. can you book it for Wednesday? 1 person, 2 nights. I'll need the reference number too. Sentence15: Thanks, that was all I needed today. Goodbye. Sentence16: I was able to book a room at Alexander bed and breakfast, your reference number is VWF48IZM . Is there anything else I can help with? Question: Who has spoken the sentence 12? (A) User (B) System

Ex Output:
Answer: (A) User


Ex Input:
Sentence1: Would you like the phone number for the Parkside Police Station, or are you in a different area? Sentence2: Thank you, that's all I need. Good bye. Sentence3: I'm sorry to hear about your situation. Good luck. Goodbye. Sentence4: Yes. Please give me the number for the Parkside police station so I can report the robbery. Sentence5: I have just been robbed and i am looking for assistance. Sentence6: The number you're looking for is 01223358966. Question: Who has spoken the sentence 3? (A) User (B) System

Ex Output:

Answer: (B) System