You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Q: Sentence1: Great. Have a nice day! Sentence2: The trainID is TR6270 and the travel duration is 38 minutes. Sentence3: That is great. I think you have provided all the help I need today. Thank you. Sentence4: I am looking for a restaurant named Prezzo in Cambridge. Sentence5: Great I also need a train for the same day as the restaurant heading to cambridge. Sentence6: Sure, where are you departing from and what time would you like to leave? Sentence7: I have five trains that arrive then, shall I book the train for you and if so for how many tickets? Sentence8: The address to Prezzo is 21 - 24 Northampton Road and the phone number is 01799521260. Would you like me to make you a reservation? Sentence9: Sure. There is actually only one train available and it costs 10.10 pounds. Do you need a reservation? Sentence10: I am looking to depart bishops stortford and need to arrive by 08:00 Sentence11: Yes, could I please have the train ID and the estimated travel time? Sentence12: Ok can you book that for me, thanks! Sentence13: You are welcome. If you ever need any other assistance, please contact us. Sentence14: Yes, for one on Thursday, 16:15 Sentence15: Could you tell me the ticket prices for the train? Sentence16: Booking was successful, the total fee is 10.1 GBP and is payable at the station. The reference number is D3VKUHBI . Thank you. Sentence17: Great! I have you booked - reference number 0Z1CRCLO . Please note - table will be reserved for 15 minutes. Sentence18: I will definitely keep that in mind! Question: Who has spoken the sentence 2? (A) User (B) System
A:
Answer: (A) User