You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Q: Sentence1: Yes to both. Sentence2: Glad to help. Goodbye! Sentence3: Thanks. I'm also interested in going to the Chiquito restaurant bar. Can you make a reservation there? Sentence4: Sure what time and how many people? Sentence5: I was able to book that hotel for you for 2 nights. The reference number is 8LCNFKVO . Sentence6: I will need a time before I can book. Sentence7: There are 2 guesthouses and 3 hotels in the city centre, do you prefer one or the other, or are there any amenities that you'd like? Sentence8: Sure, how about two nights? Sentence9: No, I am all set. Good bye. Sentence10: Yes, I would like it to have free wifi. Sentence11: Do they offer free wifi or free parking? Sentence12: Could you also get me a taxi that arrives at the restaurant by the booked time? Sentence13: Unfortunately that didn't work. Do you want to shorten your trip? Sentence14: For 5 people on Wednesday please. Could you also provide the reference number. Sentence15: Thank you for all of your help. Sentence16: Is there anything else I can help you with? Sentence17: Great. Please book it for 5 people for 5 nights starting from wednesday. Sentence18: I've booked it for you, your reference number is S7P7SXVN . Sentence19: A red ford car will arrive at 10:30 to pick you up at your hotel to take you to the restaurant. The contact number is 07751377592. Sentence20: Hi, I'm looking for a place to stay in the centre. Sentence21: The Alexander Bed and Breakfast is a 4 star guesthouse that is cheap. Does that interest you? Sentence22: It will be for 11:00 on the same day Question: Who has spoken the sentence 16? (A) User (B) System
A:
Answer: (A) User