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

[EX Q]: Sentence1: Let's try for saturday, but if that is not available then tuesday would be fine Sentence2: I was able to book you for Saturday. Sentence3: That will be all, thanks again. Sentence4: I would like to leave after 21:30. Sentence5: What day will you be arriving? Sentence6: I found Alexander bed and breakfast . Do you want to make a reservation? Sentence7: Yes bookit for the same group of people 4 nights. Sentence8: thanks can I get a reference number please? Sentence9: Yes, i am looking to book a room at the alexander bed and breakfast. Sentence10: You are welcome enjoy Sentence11: Would you like to leave or arrive by a certain time? Sentence12: Yes, whichever train has seats available for 7 people. Sentence13: I'm looking for a train that goes to Cambridge on Saturday Sentence14: I will be departing from broxbourne. Sentence15: We have 3 options that meet your criteria. All depart within an hour of each other starting at 21:32. Would you like me to book one of them for you? Sentence16: Your booking was successful, the total fee is 100.24 GBP payable at the station. The train departs at 21:32. Your reference# is UZFW2TAQ . Is there anything else? Sentence17: Where will you be departing from? Sentence18: Your reference number is XVE54KKH . Is there anything else I can do for you? Question: Who has spoken the sentence 5? (A) User (B) System
[EX A]: Answer: (B) System

[EX Q]: Sentence1: yes that works. I also need a taxi to get between the guest house and restaurant. Sentence2: I'd also like the hotel type and internet status, please. Sentence3: found it, de luca cucina and bar is modern european centre of moderate price range. phone number is 01223356666 code,cb21aw and is located on 83 Regent Street Sentence4: Thank you, I want to book a table for 8 people at 11:30 on saturday. Sentence5: No just need the address and do they have free internet? I am also looking for a nice place to eat called the de luca cucina and bar Sentence6: It is a guesthouse, cheap, wifi and parking. Would you like to reserve it? Sentence7: Worth House has internet and parking. Will that work for you? Sentence8: Ok, a black bmw will pick you up in time to arrive for your reservation at de luca cucina and bar. The taxi's number is 07228077167. Anything else? Sentence9: Found it! It is located in the north and it is cheap. Would you like to make a reservation? Sentence10: Thanks. What was the address for Worth House? Sentence11: warkworth terrace is the address, anything else? Sentence12: Thank you, please contact us again if you'd like additional assistance. Have a great day! Sentence13: I'm looking for a hotel named Worth House Sentence14: That is all thanks for your time. Sentence15: Is that a hotel or guesthouse? And, do they have free internet? Sentence16: I was able to book it the reference number is 3EZLDF7Q . Question: Who has spoken the sentence 8? (A) User (B) System
[EX A]: Answer: (A) User

[EX Q]: Sentence1: i also need a taxi to commute between the two places Sentence2: I booked you a taxi! It's a Red BMW and the contact number is: 07337581816. Sentence3: Perfect. I'm also looking for a moderately priced swedish restaurant. Sentence4: Can you find a restaurant in the north? Sentence5: I'm looking for a place to stay, in the north, that offers free parking. Sentence6: There is a Chinese restaurant and an Indian restaurant in the north. Both are moderate priced which do you prefer? Sentence7: Ok great and how many people will the table be for? Sentence8: I'd prefer a guesthouse instead of a hotel, if possible. Sentence9: I would like reservations at 13:15. Sentence10: Sure, what time would you like the reservation for? Sentence11: I reserved a table at the nirala, your reference # is 6KLPX1T4, anything else? Sentence12: Acorn guest house is a guesthouse in the north, moderately priced and 4 stars. Would you like to make a reservation? Sentence13: We have 11 different options, any other features that you are looking for? Sentence14: There will be 5 of us for Thursday. Sentence15: Absolutely, your Booking was successful. Reference number is : 9AN6IOSF . Sentence16: The indian place could work. Sentence17: Yes, please. Can you book a room for Thursday for 5 people, 4 nights? Sentence18: no, but i want free parking. Sentence19: I'm sorry there are no matching results. Sentence20: Did you have a particular price range in mind? Question: Who has spoken the sentence 9? (A) User (B) System
[EX A]:
Answer: (B) System