You will be given a definition of a task first, then some input of the task.
You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.

Sentence1: What is the phone number? Sentence2: I was able to book a taxi for you, a yellow lexus. The contact number is 07618334504. May I help you with anything else? Sentence3: I need to know depart place and destination, as well as what time? Sentence4: I have 19 places that match that criteria. Is there any area of town you'd like to stay in? Sentence5: Thank you. That is all I need. Sentence6: The phone number is 01223324222. Sentence7: Okay thank you. Can I have the postcode and phone number? Sentence8: I would like for it to include free parking. The area doesn't matter. What do you recommend? Sentence9: what is their entry fee? Sentence10: I would like a taxi to commute between the two places. Sentence11: You're welcome, let me know if I can assist with anything else. Sentence12: i also want a place to stay which has a parking and has a star 4 Sentence13: Yes, it is located at 6 Trinity Steet, postcode cb21su. Do you need any more information? Sentence14: Cambridge Contemporary Art Gallery to acorn leaving at 21.15 Sentence15: Can you tell me where the Cambridge Contemporary Art Gallery is located? Sentence16: Acorn guest house offers free parking. It's in north part of town and is moderately priced. Sentence17: The entrance fee is free. Sentence18: Yes. The postcode is cb41da and the phone number is 01223353888. Question: Who has spoken the sentence 6? (A) User (B) System
Output:
Answer: (A) User