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

Example Input: Sentence1: I need a place to stay with free wifi. Sentence2: Location doesn't really matter as long as there's free parking available. Sentence3: Ok, I have several hotels. Any particular location? Sentence4: How about the Gonville Hotel located in the centre area of town? Sentence5: What is their postcode? Sentence6: Their postcode is cb11Iy, address gonville place, phone 0122336661 they have wifi and free parking too. Would you like me to book this for you? Sentence7: I have several available. What is your price range? Sentence8: Between $100-$300 per night. Question: Who has spoken the sentence 2? (A) User (B) System
Example Output: Answer: (A) User

Example Input: Sentence1: Would you prefer Indian food or Italian food? Sentence2: Curry Prince is a moderately priced restaurant in the east part of town that serves Indian food. Would you like the phone number? Sentence3: I want a moderately priced restaurant in the east part of town. What is the phone number? Sentence4: You're welcome, goodbye. Sentence5: Awesome, thank you! Goodbye! Sentence6: The phone number for Curry Prince is 01223 566388. Sentence7: I don't care. Give me their phone number. Sentence8: Yes give me the phone number. Question: Who has spoken the sentence 7? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: Thank you for the information. Sentence2: In that case may I suggest the Acorn Guest House? It's located in the north and has a moderate price range with a four star rating. Sentence3: The man on the moon is the only concerthall, but it is in the the centre, would you like more info on that or for me to run another sarch? Sentence4: Are there any 5 star hotels in that area? Sentence5: Do they have internet? Sentence6: There are no 5 Star Guest Houses in the area. Do you have any other preferences? Sentence7: Okay, let's try a 4 star rating instead. Do you have any guesthouses listed with a 4 star rating? Sentence8: I don't care about the location or price. Sentence9: What is the price range and area? Sentence10: what is its entrance fee? Sentence11: Ok! Have a great day! Sentence12: Do you have any preferences on things to do or area? Sentence13: yes, there are 18 guesthouses with 4 star ratings. Sentence14: We don't have information on the entrance fee, but their number is 01223474144 if you would like to contact them. Sentence15: No thanks but I'm looking for something to do around town Sentence16: I am looking for a five star guesthouse to stay in. Sentence17: Can I look up anything else for you? Sentence18: Yes, they offer both parking and internet. Would you like to make a booking? Sentence19: They are located all across town, from all price ranges. Do you have any preferences? Sentence20: I am not finding any 5 star hotels. Would you like to try a different rating? Sentence21: That is all I needed. Sentence22: I need an attraction in the type of concerthall. Question: Who has spoken the sentence 18? (A) User (B) System
Example Output:
Answer: (A) User