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

Example Input: Sentence1: Sure, that post code is cb39al. Can I further assist you? Sentence2: I'm interested in visiting colleges while in town, can you please recommend some? Sentence3: I can recommend clare hall and christ's college. You need phone numbers for either one? Sentence4: Okay the TR5009 leaves at 18:40. Sentence5: Yes I also need a train to stansted airport on sunday Sentence6: That sounds great, do I call to book a seat or can you help me? Sentence7: No, thanks. That's all I needed. Sentence8: I'm glad I was able to help you. Thanks for using our service have a nice day. Sentence9: Sure. Where will you be departing from, and what time? Sentence10: Please book for 6 people. Sentence11: I am leaving from Cambridge. I would like to leave sometime after 18:00. Sentence12: I would like the post code for clare hall please. Sentence13: I would be more than happy to help you book! Tickets are 8.08 pounds. How many tickets would you like me to book for your trip? Sentence14: Booking was successful, the fee is 48.48 GBP payable at the station . Reference number is 4ESBHTB0 . Is there anything else I can help you with? Question: Who has spoken the sentence 7? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: i am sorry. i have double checked and still do not find anything matching your criteria. would you like a different star rating? Sentence2: I can help with that. What kind of price range do you have in mind? Sentence3: there are a variety of good things in the north it depends on what you want i will find whatever you request Sentence4: There doesn't appear to be a 4 star hotel with wifi in the north. Can I interest you in a lower star rating? Sentence5: i need a hotel with wifi in the north part of town Sentence6: Perhaps there is a guestroom? Sentence7: No but would you like to try another location ? Sentence8: No, the hotel needs to have a 4 star rating. Can you please check your system again? Thanks Sentence9: I am open as far as price range, but I would love a 4 star place. Sentence10: No I need the north. Is there anything else available in the north? Question: Who has spoken the sentence 3? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: That's all. Thank you for the help! Sentence2: That's ok. I need a taxi to take me to and from the hotel and pool. I want to leave the pool by 02:15. Sentence3: What is the price range for the Acorn guest house? Sentence4: Kings Hedges Learner Pool will still be fine. I'd like a taxi to pick me up there at 02:15 and take me to the Acorn Guest House. Sentence5: Unfortunately, I do not have any that are in the expensive range. I have several 4-star moderately priced hotels or can I look for something else for you? Sentence6: The price there is moderate. Sentence7: Let's go with Kings Hedges Learner Pool. Sentence8: There are two swimming pools in the north, Jesus Green Outdoor Pool and Kings Hedges Learner Pool. Do you have a preference between the two? Sentence9: On the swimming pool, what's the phone number and entrance fee? Sentence10: I'm not looking to book yet, can you tell me their price ranges? Sentence11: What area of town and what is your price range? Sentence12: Please pick a pool first; Jesus Green Outdoor Pool or Kings Hedges Learner Pool? Sentence13: Great! I have a yellow toyota picking you up at 02:15. The contact number is 07441551293. Is there anything else I can assist you with? Sentence14: I guess I'll change my price range. Are there any expensive hotels with all the amenities that I'd like along with free parking? Sentence15: I need somewhere to stay. Should have free parking and free wifi Sentence16: What day do you need your reservation and for how many people and how long will you stay? Sentence17: I need one near a swimmingpool. Sentence18: Their phone number is 01223353248. As for entrance fee, I don't have the information to provide to you. I apologize. Sentence19: There are two Swimming pools in the north. There are no hotels with 4 stars, moderate price range, internet and free wifi. Would you like to change your search? Sentence20: We will have to know which hotel you are staying at first before booking a taxi. Sentence21: No problem at all. Have a great day. Sentence22: Okay. Is there a hotel close to Kings Hedges Learner Pool that has free parking and wifi? I would prefer a four star location in the north. Sentence23: The centre of town and with a moderate price range. Nothing too expensive. Sentence24: There are seven that meet those requirements. Might I suggest the Acorn Guest House? I've heard it's quite nice. Sentence25: There are 6 hotels in the north part of the city that fall in the moderate price range, have free wifi and parking, and have 4 stars. Any other specifications? Sentence26: I don't need to make a reservation. I am just looking for information on a hotel. Can you help me find a 4 star hotel in the North? Sentence27: They're all in the moderate price range. Sentence28: Thank you! I'd also like to find a swimming pool in the area. Question: Who has spoken the sentence 7? (A) User (B) System
Example Output:
Answer: (B) System