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

[Q]: Sentence1: Is there one close to the area I booked the restaurant reservation? Sentence2: I have found 9 guesthouses that meet that requirement. Is there a certain area you would prefer to stay in? Sentence3: No, I would just like the star rating, postcode, and phone number of the establishment. Sentence4: Can I have the reference number please? Sentence5: How about a cheap one? Sentence6: Unfortunately there are no guesthouses that are in the expensive price range. Sentence7: Sesame Restaurant and bar number 01223358899 and it's address is 17 Hills Road City Centre. Sentence8: I have booked your request for 7 people at the Sesame Restaurant and Bar, located at 17 Hills Road City Centre for 6PM on Monday. Sentence9: That takes care of everything. Thank you for the help. Sentence10: i have found 29 hotels that meet your criteria, what price range are you looking for? Sentence11: Yes certainly. However, there seems to be an error. I was unable to book that time. Is there another time I could book for you? Sentence12: Is 5PM available instead? Sentence13: I would like to make an appointment for 7 people at 6PM on Monday. Sentence14: Great. I'm also looking for a place to stay. I need a hotel that includes free Wi-Fi and free parking Sentence15: Do you have an expensive guesthouse? Sentence16: Alright, have a nice day! Sentence17: Yes I have the Alexander Bed and Breakfast in the city center. Would you like me to book it for you? Sentence18: The Alexander Bed and Breakfast is a 4 star guesthouse. The postcode is cb12de and the phone number is 01223525725. Is there anything else I can help you with? Sentence19: Hello, I would like information on the Sesame Restaurant and Bar. Sentence20: Yes it is. I have booked a table for you at 17:00 on Monday for 7 people. The reference number is CZ3JGGJP . Question: Who has spoken the sentence 5? (A) User (B) System
[A]: Answer: (B) System

[Q]: Sentence1: El Shaddai is a guesthouse. Anything other questions about them? Sentence2: Yes, they have free parking. Would you like me to book you a room? Sentence3: Whoa whoa, easy there tiger, Lets narrow the search down first. In the center, 0 stars, cheap and it can be a hotel or guesthouse. Sentence4: Yes I need a chinese restaurant. Sentence5: ok for how many people and when are you planning your stay? Sentence6: I am looking for a restaurant that sell seafood,will prefer one in the center of the city. Sentence7: ok what location? Sentence8: Do they have parking? Sentence9: Yes, I'd like to travel on Wednesday. I'll need to arrive by 8:00. Sentence10: It should be in the same area? Sentence11: I would like a train into Cambridge from Stevenage. Sentence12: Is El Shaddai a guest house or hotel? Sentence13: OK. Is there anything else I can help you with today? Sentence14: No. That's everything I needed and then some, actually! Thanks, take care! Sentence15: Okay, is there anything else I can help you with? Sentence16: No, I don't need a chinese restaurant after all. Thanks for looking. Sentence17: All set. You are booked for 7 people on TR9448. You reference number is B1Q6DDTE . Can I help with anything else? Sentence18: i only have one option can i book it for you? Sentence19: No, I don't need to. I was just curious about it. Thank you for all of your help. Sentence20: The TR9448 arrives at 06:43. Would you like me to book a ticket for you? Sentence21: Yes, I need a hotel as well. Sentence22: Is there a specific day and time you would like to travel at? Sentence23: I'm sorry, there seems to be an error. Can you please restate your request? Sentence24: How about el shaddai? Fits your request perfectly. Sentence25: Thank you for calling. Have a great day! Sentence26: Yes, please book 7 seats. Question: Who has spoken the sentence 9? (A) User (B) System
[A]: Answer: (B) System

[Q]: Sentence1: I don't want to leave. I want to stay for 3 nights starting on Tuesday. There will be 6 of us. Sentence2: I would like to find an expensive hotel to stay in during my visit. Sentence3: I would like one that serves northern european food, if possible. Sentence4: Great. I was able to book your car with no issues. They will be driving a black Tesla and you will be able to contact them at 07224648595. Sentence5: And you never have to leave if you don't want to. I have booked a reservation at Huntingdon Marriott Hotel and the reference number is EQNKY1ZC . Anything else? Sentence6: Will you be going back to the hotel or somewhere else? Sentence7: I'm not picky with the area. I just want it to be moderately priced. Sentence8: Yes, please book it if possible. Sentence9: I can help with that. What area will you be staying in? Sentence10: I'm sorry, there are no moderately priced hotels in this area. Would you like to try another? Sentence11: Thats sounds great. can i get the area and address ? Sentence12: I was looking for a restaurant. I already have a hotel reservation Sentence13: We have quite a few choices for you today, how about de luca cucina and bar, you can a few drinks while your there! Sentence14: Great I believe that covers everything. Goodbye. Sentence15: There are 3 restaurants matching your query. Do you prefer the south or the centre? Sentence16: The hotel I guess. Sentence17: The area does not matter. But will for sure want it to be an actual hotel. Sentence18: What day would you like to leave Sentence19: I'll need a taxi that leaves the restaurant by 22:00. Sentence20: I have the in the Huntington Marriott hotel city center that is rated 4 stars and include free parking and free wifi. Would you like me to check availabiltiy? Sentence21: Thanks for contacting us today. Have a great day and trip. Goodbye. Sentence22: Yes, are there any moderately priced northern european restaurant, if no northern european, modern european will do. Sentence23: I would like the restaurant in the same area, Cambridge, please. Sentence24: And would you prefer the south of Cambridge or the centre of Cambridge? Sentence25: There are a couple in the centre area and one in the south area. Do you have a preference? Sentence26: The area is the centre. The address is 83 Regent Street. Is there anything else I can help you with? Question: Who has spoken the sentence 21? (A) User (B) System
[A]:
Answer: (B) System