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

Sentence1: Yes please book a seat for me. And can you tell me if there are any african restaurants in ely near the train station? Sentence2: I'd like to travel on Saturday, but I don't want to leave until after 19:30. Sentence3: What is the price and travel time for that train? Sentence4: What day would you like to travel, and at what time do you want to leave? Sentence5: Hello. I need a train ticket on a train going from Cambridge to Ely. Sentence6: The travel time is 17 minutes and it will cost you 3.52 pounds. Sentence7: I'm happy to be of service. Enjoy your time in Cambridge! Sentence8: Great that's all the info I needed today thank you. Sentence9: TR7349 will depart cambridge at 19:50 on Saturday, arriving in Ely at 20:07. Will that work? Sentence10: Your seat has been booked for the TR7349, reference number is ER5D744W . I can look up African restaurants in Cambridge but not Ely. Question: Who has spoken the sentence 3? (A) User (B) System
Answer: (B) System