Definition: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Input: Sentence1: Yes many. It all depends on what type of cuisine you're after. Sentence2: I was able to find two restaurants that serve gastropub for you. I have backstreet bistro and the slug and lettuce, both located in the centre of town. Sentence3: I am looking for a restaurant that serves swedish food in the centre. Sentence4: There are no restaurants that serve Swedish food in the centre. What would you like to do? Sentence5: Can I get a table for 1 at the Backstreet Bistro? Saturday at 17:15, if possible. Sentence6: Well, the restaurant should be expensive. Are there any expensive restaurants in the centre of town? Sentence7: What about a restaurant that serves gastropub food? Sentence8: It's all booked, your reference number is STQ9N9UV Sentence9: Excellent. That will be everything. Thank you! Sentence10: You're welcome. Have a great day! Question: Who has spoken the sentence 6? (A) User (B) System
Output:
Answer: (A) User