You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Q: Sentence1: I have several options for you. Is there a particular area you're looking for? Sentence2: I'd like international food, please. Sentence3: I have 3 such places available. Allenbell, Autumn House, and Leverton House. Which guesthouse do you prefer? Sentence4: no thanks,thats all for now Sentence5: In the east, please. Something inexpensive, with free parking. Sentence6: Sure, I can help you with that. Was there a specific type of food you were looking for? Sentence7: The missing sock is a cheap international restaurant in the east. Will that work for you? Sentence8: Have a lovely day, goodbye! Sentence9: There are 5 people in my group and we will be staying 2 nights. Sentence10: Booking was successful. The table will be reserved for 15 minutes. Reference number is : YCXB5JQE . Will there be anything else today? Sentence11: If the allenbell is cheap, I would like to book ti for tuesday. Sentence12: How many days will you be staying and will there be other travellers with you? Sentence13: Okay, I have you booked for 5 people, 2 days, beginning on Tuesday. Your reference number is UFT1H00C . Can I help you with anything else? Sentence14: Can you make a reservation for Tuesday for 5 people at 17:15? Sentence15: Yes! Can you help me find a restaurant near the hotel? Sentence16: I need a guesthouse. Question: Who has spoken the sentence 9? (A) User (B) System
A:
Answer: (B) System