You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.

Sentence1: I will be going to lynne strover gallery. Sentence2: I would like to arrive by 16:00. Sentence3: It would be great if you could help me reserve a taxi Sentence4: No you've done it all for me. Thanks! Sentence5: Absolutely! When would you like to arrive? Sentence6: Booking is confirmed. A white volvo will be picking you up, their contact number is 07937377256. Anything else I can help with? Sentence7: Where are you departing from? Sentence8: We are happy to help. Thank you for using our services. Sentence9: I'd love to help! Where is the destination? Sentence10: I'm at Sheep's green and lammas land park fen causeway. Question: Who has spoken the sentence 6? (A) User (B) System
Answer: (A) User