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

[Q]: Sentence1: i also want a taxi to commute between the two places Sentence2: That's it for now. Thank you for you patient help. Goodbye. Sentence3: book a hotel for 7 people and 2 nights starting from wednesday Sentence4: I have 24 options available. Do you have a specific area in mind? Sentence5: It will be picking me up from the hotel. I'll need the contact number and car type, please? Sentence6: First let's pick one of the 14 guesthouses and then I'll book your room! Sentence7: Absolutely! Your Booking was successful. Reference number is : 7ZCFV2O4 . Is there anything else you need? Sentence8: I need a guesthouse to stay while I'm in town. I don't care if it has free parking or not. Do you have something I could get? Sentence9: We have five parks available. Do you have an area that you would prefer? Sentence10: Yes, I would recommend acorn guest house. Sentence11: I should be able to help you with that. Are you traveling to the Botanic Gardens or from? And what time do you want the taxi for? Sentence12: I'd like someplace in the center, please. Sentence13: There are 14 guest house with internet and moderate price what area would you like Sentence14: Sounds good. There are a lot to chose from, is there one that you specifically recommend? Sentence15: And where would you like the taxi to pick you up? Sentence16: That sounds fine can you book for seven people for two nights starting Wednesday? I'm also looking for a park to visit. Sentence17: You are booked for a white audi with the contact number 07387814664. May I help with anything else, like a restaurant? Sentence18: Yeah, any time I was happy to help. Sentence19: I'm also looking for a park to go to while I'm in town. Sentence20: i want to leave the hotel by 01:15 Sentence21: The Cambridge University Botanic Gardens is located in the centre. It's on Bateman Street. The entrance fee is 4 pounds. Can I help you with something else? Sentence22: No specific area but i do need wifi and a moderate priced guesthouse please. Question: Who has spoken the sentence 4? (A) User (B) System
[A]: Answer: (A) User

[Q]: Sentence1: Where are you headed? Sentence2: anytime after 21:00. Sentence3: What time monday would you like to depart? Sentence4: okay, I do need the reference number also. Sentence5: Birgmingham New Street from Cambridge Sentence6: Yes will you book it for me ? Sentence7: I highly recommend Zizzi Cambridge in centere. It has excellent pasta and meatballs. Would you like me to book a reservation for you? Sentence8: Booking was successful. The table will be reserved for 15 minutes. Reference number is : DKSUCWY6 . Sentence9: Yes, on Monday for 2 people at 14:30. Olease give the reference number. Sentence10: thank you that will be all good bye Sentence11: I need 2 tickets and a reference number please Sentence12: My apologies, busy weekend and the system is lagging, you are set, reference number is B6SGLAAT total cost is 150.19 GBP, thank you for your patience. Sentence13: Have a nice day, goodbye. Sentence14: How many tickets will you need? Sentence15: Thank you so much, can you please also find me an Italian restaurant in the centre of town that's on the cheap side? Sentence16: TR8406 will depart at 21:40. Is that okay? Sentence17: I need a train on Monday leaving birmingham new street? Sentence18: Sure thing. I will work on getting this booked for you. Question: Who has spoken the sentence 10? (A) User (B) System
[A]: Answer: (A) User

[Q]: Sentence1: No, I seem to have all the information I need today. Sentence2: TR3769 departs at 13:40 with a total travel time of 28 minutes. Do you need further assistance with anything else? Sentence3: Absolutely! Where will the departure and destination points be? Sentence4: I would like to leave Cambridge on Monday after 13:15 Sentence5: These trains leave from Cambridge 40 minutes after the hour every hour, starting at 13:40 and running to 23:40. Would you like me to book a ticket? Sentence6: I do not need to book the hotel yet. Can you please give me the phone number and hotel type? Also, do they have internet? Sentence7: Sure, we have the lensfield hotel, it's a 3 star expensive hotel in the south with free parking. Would you like to book it? Sentence8: The phone number is 01223355017. It is a hotel type, and yes there is free internet. Anything else? Sentence9: There are many trains that fit your criteria. Could you please tell me what day and time you would like to depart? Sentence10: I also need a place to stay in the expensive range that includes free parking, in the south with a star of 3. Sentence11: I will be departing from Cambridge and my destination is the Stansted airport. Sentence12: No thank you. I will just need the train ID and travel time of the first one leaving after 13:15 going to the airport. Sentence13: Great. If you need tickets, don't hesitate to contact me again. Have a great day. Good bye. Sentence14: I am looking on information regarding train tickets. Can you help? Question: Who has spoken the sentence 9? (A) User (B) System
[A]:
Answer: (B) System