Detailed Instructions: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Q: Sentence1: I am leaving from ashley hotel. Sentence2: Where are you departing from? Sentence3: Arrival doesn't matter. I just need to leave after 19:15 from Ashley Hotel, and I want to go to Bridge Guest House. Sentence4: No problem. Happy to help. Sentence5: What time do you need to arrive by? Sentence6: got it! your car type is a grey honda and the contact number is 07306489066 Sentence7: I need to book a taxi to the Bridge Guest House please. Sentence8: Thanks! That's all I need. Question: Who has spoken the sentence 4? (A) User (B) System
A:
Answer: (A) User