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

[EX Q]: 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 A]: Answer: (B) System

[EX Q]: Sentence1: I'd like to find some place to go on the east side of town. Sentence2: Thank you. Have a good day, goodbye. Sentence3: I can certainly suggest something for you. I have 10 options. Do you prefer an entertainment venue, or perhaps a museum or park, etc? Sentence4: Sounds great. That's all I needed. Thank you! Sentence5: I would prefer just anything in the east, can you give me the address and attraction type of one? Sentence6: No problem. How does the Funky Fun House sound? It is standard entertainment and it is located at 8 mercers row, mercers row industrial estate. Question: Who has spoken the sentence 2? (A) User (B) System
[EX A]: Answer: (A) User

[EX Q]: Sentence1: I have successfully booked you at the acorn guest house for 3 nights starting on Friday. Your reference number is Z6DIM0YM . Is there anything else I can help with? Sentence2: Where will you be departing from? I have a number of trains to choose from. What time would you like to leave? Sentence3: I'm looking for a train going to Cambridge on Friday. Sentence4: We have eight 4 star guesthouses on the north side. Do you have a specific price range or do you need certain amenities? Sentence5: Thank you for contacting the Cambridge TownInfo centre. Goodbye Sentence6: No, thank you. I'll call back when I'm ready to book. Thank you so much for your help. Sentence7: Sounds good. I need it for 3 nights starting Friday. There are 6 of us. Sentence8: I will be departing from Norwich and should arrive by 16:30. Sentence9: It costs 17.60 pounds per ticket. Would you like to book this? Sentence10: What area are you looking to stay in? Sentence11: TR4828 departs at 14:16 and arrives by 15:35. Would you like a ticket? Sentence12: Okay I could recommend the Acorn Guest House that is moderately priced and rated 4 stars. Would you like a booking? Sentence13: I'm looking to stay in the north please. Sentence14: I need a place to stay with 4 stars. Sentence15: how much will that train cost me? Sentence16: any can do as long it has a moderate price range Question: Who has spoken the sentence 6? (A) User (B) System
[EX A]:
Answer: (A) User