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

Q: Sentence1: No, but I would like to find a cheap priced south african restaurant. Sentence2: I'm sorry, but we don't have and South African restaurants in the area. Is there a different type of food I can help you find? Sentence3: I would say let's look for an attraction first. Can you recommend something to do in the south part of town? Sentence4: I will go with whatever you recommend, I just need the attraction type and postcode. Sentence5: Hi, I am looking forward to trying some of your local restaurants. I do need help with some other places to go in town while I am there though. Sentence6: There are several nice parks in the area as well as theaters and museums. Sentence7: The byard art museum postal code is cb21sj. Can i help you get transportation to and from the museum? Sentence8: Try Portuguese then. Sentence9: Thanks so much for putting up with me! You've been great! Sentence10: 3 people will be dining. Please give me a reference number once you finish the reservation Sentence11: I would rather be in the south area. Sentence12: What is your food type preference? Sentence13: There are two results. Both are cheap. Do you prefer the south or centre? Sentence14: I have finished booking it for Thursday at 12:15 for 3 people at Nando, your reference number is TDQZGM38 . Do you need anything else? Sentence15: Can you book a table for me there on Thursday at 12:15? Sentence16: The only option is nandos. Sentence17: You are welcome enjoy Sentence18: How many people are in your party? Question: Who has spoken the sentence 15? (A) User (B) System

A: Answer: (B) System
****
Q: Sentence1: Actually, I'm all set. Thank you! Bye! Sentence2: OK, great. will it be the same two people as on the train and starting on Monday? or do you have different needs for lodging? Sentence3: What is the price for that trip? Sentence4: Could you clarify if you need the reservation for 1 or 2 people please? Sentence5: Certainly, where will you be departing from? Sentence6: It look like the TR0532 is what you are looking for departing Bishops Stortford at 7:29 and arriving in Cambridge at 8:07. Would you like to book? Sentence7: The postcode for Worth House is cb41da and yes, it has internet! Sentence8: I would prefer the hotel be in the north part of town. Sentence9: I don't need to book today, thanks. Can you get me the postcode of one of them? Oh, and please make sure the one you choose has internet! Sentence10: Okay you sure you will not require a booking? Sentence11: I need a cheap hotel with free parking. Sentence12: The fare is 10.10 GBP per ticket. Sentence13: Okay let me see if I can book that for you. Sentence14: I need reservations for 2. Sentence15: Hi I am looking for a train to arrive in Cambridge by 08:15. Sentence16: Nope, same people. Sentence17: I've booked your tickets for the 7:29 train from Bishops Stortford, reference ZHT6R80S . Can you give me more information about the type of hotel you'd like? Sentence18: 1 person 5 nights please Sentence19: There are 10 total hotels, do you have a preference for area? Sentence20: I'd be happy to book that for you, what day will you be arriving on, and for how many nights? Sentence21: I'll be leaving from Bishops Stortford on Monday. Sentence22: I will go ahead an book at the Worth House. Sentence23: City centre north b and b and Worth house are both guesthouses and located in the north. Would you like me to book one for you? Sentence24: I need to make a booking for 2 people and can you find me a place to stay in the north? Question: Who has spoken the sentence 17? (A) User (B) System

A: Answer: (B) System
****
Q: Sentence1: I prefer a gueshouse. Sentence2: I'm glad I was able to help you today! Thank you for contacting Cambridge TownInfo centre. Enjoy your trip! Goodbye! Sentence3: There are many places to stay that offer free parking. Do you prefer a guesthouse or hotel? Sentence4: No, but can you help me find a restaurant? I think it's called Meghna. Sentence5: Ahhh.. great, thanks! That's all I needed! Sentence6: Yes, they are at 154 chesterton road and can be reached by phone at 01223353888. Would you like me to book you? Sentence7: Great can you tell me the star rating of the hotel as well? Sentence8: Yes, that is a moderate priced indian restaruant in the west. Sentence9: Acorn Guesthouse has a star rating of 4. Would you prefer other options or would you like for me to book you? Sentence10: That's it! Can you give me the phone number and area, please? Sentence11: Can I please have their address and phone number? Sentence12: The acorn guest house would fit your needs would you like me to make a reservation for you Sentence13: Meghina's phone number is 01223727410. They are located in the west. Sentence14: Place to stay the night, with free parking and it doesn't need free wifi. Question: Who has spoken the sentence 2? (A) User (B) System

A:
Answer: (A) User
****