Given the task definition and input, reply with output. You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.

Sentence1: Booking completed! Booked car type : white lexus Contact number : 07055220533 Sentence2: I think that is all I need. Have a nice day. Sentence3: I also need a taxi to get to the restaurant from the hotel. Sentence4: I want to book Worth House for 3 people for 4 nights starting on Wednesday. Sentence5: Booking was successful. Reference number is : UOVCEW8B . Sentence6: I'd recommend the Prezzo. It's an Italian restaurant. Would you like to book a table? Sentence7: What time do you need to be picked up and from where? Sentence8: I'd like it to go from the Worth House to the Prezzo. It can pick me up any time, as long as it arrives by the booked time. Sentence9: Thank you. You do the same! Sentence10: Can you tell me how many guests and what time you would like the reservation for? Sentence11: No, I do not have a preference. Sentence12: We have British, Indian or Italian to choose from in that category. Do you have a preference? Sentence13: Yes, we would like a reservation for Wednesday. Sentence14: I'm looking for information on worth house. Sentence15: Worth House is a cheap 4-star guesthouse on the north side of town. They're located at 152 Chesterton Road, cb41da. Sentence16: I've reserved a table for three at 11:30 on Wednesday. Your reference number is HJKOKG94 . Is there anything else I can help you find in the area? Sentence17: For 3 people, at 11:30 please. Sentence18: I need a find restaurant in the moderate price range in the west part of the town Question: Who has spoken the sentence 6? (A) User (B) System
Answer: (A) User