Instructions: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Input: Sentence1: I'm looking for a moderately priced place to stay. Sentence2: A grey Skoda has been booked to pick you up. Their contact number is 07015780256. What else can I do for you? Sentence3: Let's go with a 4 star hotel, I'll need 5 nights for 2 people, starting on Friday. Sentence4: Yes, I am going to need a taxi to go between the two places. I need it to arrive in time for dinner. Sentence5: I would prefer it to be in the north. Sentence6: I would recommend golden wok. shall i book it ? Sentence7: You have eleven choices in the north. Most are guesthouses, two are hotels. Sentence8: You've done it all, thanks so much. Sentence9: I would like to stay in the north part of town. Sentence10: There are 4 moderately priced Chinese restaurants to choose from. Would you prefer to dine in the north or centre? Sentence11: There are 33 moderately priced accommodations. Do you have a specific area or star rating you're looking for? Sentence12: Have a wonderful trip. Sentence13: Booking was successful. The table will be reserved for 15 minutes. Reference number is : 093R1Y1T . Is there anything else I can help you with? Sentence14: Yes, please book friday at 16:00 for 2 people. And tell me the reference number Sentence15: Okay. I booked you at the 4 star Ashley Hotel for 5 nights and your reference number is 67NA9WLR . Sentence16: Thank you. I am also looking for a Chinese restaurant with the same price range as my hotel. Can you help me with that? Question: Who has spoken the sentence 13? (A) User (B) System
Output:
Answer: (B) System