You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Q: Sentence1: Glad I could be of assistance. Have a great day! Sentence2: Sure, their phone number is 01223446100 and their postcode is cb11ly. Is there anything else I can help you with? Sentence3: No thanks. But can I get the phone number and postcode please? Sentence4: I have it booked for you. Your reference number is knutp0u4 . Can I be of further assistance? Sentence5: I love swimming! Can you recommend a pool in Cambridge? Sentence6: Yes, please for one. I will need the reference number Sentence7: Sure, I would be glad to help. Where will you be departing from? Is there a particular time you'd like to arrive by? Sentence8: The first train leaving cabridge for leicester on Sunday is TR9517. It leaves at 18:21. Would you like me to book a seat on that train? Sentence9: i am also looking for a train that leaves after 18.00 on sunday Sentence10: Parkside Pools is located in the centre of town. Would you like the address? Sentence11: No thanks, that's everything! Sentence12: I will be departing from Cambridge to Leicester. The arrival time does not matter as long as it leaves after 18:00. Question: Who has spoken the sentence 6? (A) User (B) System
A:
Answer: (A) User