Instructions: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Input: Sentence1: For Vietnamese, I have a great place called Thanh Binh. It is a cheap restaurant with great food. Would you like help reserving a table? Sentence2: There are no Austrian restaurants in the west. Would you like to try another cuisine? Sentence3: Thank you. I would also like a train leaving on Friday going to Ely. Sentence4: I would like to dine at a cheap restaurant on the west side of town. What are my choices? Sentence5: Great. your booking was successful and you table is reserved for 15 minutes. The reference number is : 99A7DNB0 . Sentence6: I think that covers everything. Thanks for your assistance today, you've been so helpful! Sentence7: I need to arrive by 18:45 on Friday. Sentence8: Would you like me to book it for you ? Sentence9: Okay, I have booked that for you and the reference number is: UDP5WC1J . Can I help you with anything else? Sentence10: TR9933 departs Cambridge at 17:50 and arrives in Ely at 18:07. Do you want me to book this for you? Sentence11: I want to leave in time enough to get to the restaurant on time Sentence12: Yes please, for seven people Sentence13: Would you like to eat Italian or Vietnamese cuisine? Sentence14: Yes, that would be great. My party will consist of 7 people and I would like to book for 12:45 on Thursday. Sentence15: How about Vietnamese food? Sentence16: Thank you! If you need anything else, please don't hesitate to ask. Sentence17: What time would you like to leave? Sentence18: I would like Austrian actually. Question: Who has spoken the sentence 6? (A) User (B) System
Output:
Answer: (A) User