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: Thanks and have a nice day. Sentence2: I can definitely help you with that. Where will you be departing from? Sentence3: i want to book a taxi. The taxi should leave after 02:30 and should go to Norwich train station. Sentence4: I will be departing from jesus college. Sentence5: I have booked you a grey Audi. The contact number is 07597249308. What else may I help you with? Sentence6: that's is all i wanted for today, thanks Question: Who has spoken the sentence 4? (A) User (B) System
A:
Answer: (A) User