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

[EX Q]: Sentence1: The phone number is 01223420060 and the post code is cb46az. Sentence2: Ok. I booked four tickets for you. Your reference number is FRSZ5A8R . Can I help you with something else? Sentence3: Yes. Book for 4 people. Sentence4: I would like the phone number and postcode for it please. Sentence5: What information are you looking for? Sentence6: Sounds great, before i let you go, I just want to make sure we have covered everything that you need. Sentence7: yes you did Sentence8: TR6806 will leave at 10:01 and arrive at 11:01. The trip will take 60 minutes and it will cost 17.90 pounds. Would you like to book? Sentence9: Thank you! That's all I needed, thanks so much. Sentence10: enjoy your stay in Cambridge! Sentence11: I'm going from cambridge to broxbourne any time after 09:15. Sentence12: I show 404 rail departures on Thursday, can I get something specific for you? Sentence13: I want a train leaving on thursday. Sentence14: Im also looking for a place by the name of milton county park. Question: Who has spoken the sentence 4? (A) User (B) System
[EX A]: Answer: (A) User

[EX Q]: 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
[EX A]: Answer: (A) User

[EX Q]: Sentence1: Get me a phone number for one that is close to the hotel and is free. Sentence2: Their address is storey's way and their phone is 01223336233. Is there anything else I can do for you today? Sentence3: Happy to help. Please let us know if you need anything else. Sentence4: Could you give me the address and phone number? Sentence5: All set, the car is a white volvo, Contact number is 07321652724, any other questions? Sentence6: I will need to be picked up at the hotel by 4:45 to arrive at the college on tuesday. Sentence7: I would like to book it for 4 nights for 4 people please. Sentence8: Well then should I search for a college in the north instead, if you want it close to your hotel? Sentence9: i want to check in on tuesday Sentence10: Yes please, a reference number would be great! Sentence11: none in the west, I talked so someone earlier Sentence12: I also want to book a taxi to commute between the two places. Sentence13: that's okay, give me the number for the college closest to the hotel and is free, may I know the address as well? Sentence14: I am looking for a hotel call arbury lodge guesthouse. Sentence15: Yes, i am looking for colleges to visit on the west side of town. Sentence16: Your booking was successful. Reference number is : OE6IHAT2 . Is there anything else I can assist you with today? Sentence17: I'm sorry for the confusion, which college do you want a contact number for? Sentence18: No I believe we got everything covered today.Thanks. Goodbye. Sentence19: Arbury Lodge Guesthouse is located at 82 Arbury Road in the north side of Cambridge. Do you need more information or would you like to book a room? Sentence20: Which will be your departure site? What time do you want to leave or to arrive? Sentence21: There are not any colleges located in the north actually. Sentence22: None in the north 5 in the west, I personally recommend churchill college entrance is free, any further questions? Sentence23: Will you be needing a reference number? Sentence24: Okay, I can help you with that. What day do you plan to check in? Sentence25: There are five. Three that are free, and two that have an entrance fee. Sentence26: Make sure you get contact number and i'll be there as soon thank you Question: Who has spoken the sentence 22? (A) User (B) System
[EX A]:
Answer: (A) User