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

Let me give you an example: Sentence1:i need a place to dine in the center thats expensive Sentence2: I have several options for you; do you prefer African, Asian, or British food? Sentence3: Any sort of food would be fine, as long as it is a bit expensive. Could I get the phone number for your recommendation?Question: Who has spoken the sentence 2? (A) User (B) System
The answer to this example can be: Answer: (A) User
Here is why: The sentence 1 is said by a user because the intent of it says that the information has to be gathered from the system

OK. solve this:
Sentence1: I'm not so concerned about the area, but I'm looking for something cheap. I won't need to use parking. Sentence2: I am sorry there are none located in the centre. Something else perhaps? Sentence3: I'm sorry, our signals may have gotten crossed. What would you like to know the entrance fee, address, and phone number for? Sentence4: Does it include free wifi? Sentence5: What about something moderately priced that's in the centre instead? Sentence6: Is there another one that is in the cheap price range that includes free wifi? Sentence7: That's great can you give me the phone number, postcode and address for Alexander Bed and Breakfast? Sentence8: I am sorry. That was my mistake. I h ave all the information I need, thank you. Sentence9: Is there anything else that you might need? Sentence10: Im looking for a place to eat eritrean food at the centre. Sentence11: Restaurant one seven is a good one. Would you like to book it? Sentence12: Ok Thank you and have a great day. Sentence13: British food sounds good. What options do I have? Sentence14: Phone is, 01223337766. Adress starting with post code is,cb21ab De Vere University Arms Regent Street City Centre Sentence15: My apologies. Actually, Alexander Bed and Breakfast does include free wifi. I have confirmed that information. Sentence16: I also need a place to stay. Sentence17: I'm sorry, after searching I was unable to acquire any information about the hotel and weather it has wifi. Sentence18: I am not quite ready to book a table, but may I have the address of the restaurant including the postcode and the phone number? Sentence19: Sure, it's at 56 saint Barnabas road, Cb12de. The phone number is 01223525725. Would you like me to book you a room? Sentence20: Nah, that won't be necessary. Sentence21: entrance fee, address, and phone number Sentence22: I'd be happy to help you acquire lodgings. What part of the city would you like to stay in, and what amenities do you prefer? Sentence23: Alright, I have Alexander Bed & Breakfast already in centre, very affordable and 4 stars. Does that interest you? Sentence24: OK, there are a lot of moderately priced restaurants in the centre. How do you feel about british food? Question: Who has spoken the sentence 20? (A) User (B) System
Answer:
Answer: (A) User