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 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
Example output: Answer: (A) User
Example explanation: The sentence 1 is said by a user because the intent of it says that the information has to be gathered from the system
Q: Sentence1: It will be dinner for 5 people. Sentence2: Anywhere is fine, it just needs to be moderately priced. Sentence3: I am interested in finding local Indian restaurants to visit during my trip to Cambridge. Sentence4: No actually I don;t need a reservation. I just need to find a hotel that is a guesthouse with free parking, and in the east and moderately priced. Sentence5: There are 24 guesthouses to stay at around town. What area of town and price range are you looking for? Sentence6: I also need a place to stay and should be a guesthouse Sentence7: Okay. Then I recommend curry prince in the east. Would you like a reservation there? Sentence8: I have four indian restaurants. Do you have a area of town in mind? Sentence9: Sure! How many people, what time, and what day? Sentence10: No, I only need one. Sentence11: Do you need to cancel the booking? Sentence12: Do you have a price range in mind? Sentence13: I have 4 at that price. 2 in east, 1 each in north and west. Any preferences? Sentence14: Can you make a reservation for me, please? Sentence15: Of course! What time would you like to dine? Sentence16: Have a nice day. Sentence17: No, any is fine really. Sentence18: It is in the East section of town. Sentence19: Moderate price range, please. Sentence20: you have a booking already for the Autumn House are you wishing to book another guesthouse? Sentence21: Booking your reservation was successful and your reference number is 47TOYZUY . Have you decided in which part of town you want me to find an Indian restaurant? Sentence22: 5 people and 4 nights. Sentence23: Okay, I recommend Autumn House. For the reservation on Friday, how many people will be staying and for how many days will you be staying? Sentence24: then Booking was successful.Reference number is : 47TOYZUY . Sentence25: There a 6 guesthouses in the east. Half of them are in the cheap range, and the other half moderate. What is your preference? Sentence26: I only need one booking. Sentence27: The price doesn't matter. But I need a reservation starting on Friday. Sentence28: thanks for your help. have a great day Sentence29: I am looking for a hotel in the east. Sentence30: Not yet. What part of town is it in? Question: Who has spoken the sentence 15? (A) User (B) System
A:
Answer: (B) System