Q: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Sentence1: I would like to leave Friday and arrive by 17:45. Sentence2: Yes, that would work. Can you book me 4 tickets please? Sentence3: No. I think that's everything. Thank you for your help. Sentence4: No, that one won't work. I have to arrive by 17:45. Sentence5: Can I get the postcode and entrance fee for The Junction? Sentence6: Booking was successful, the total fee is 66.4 GBP payable at the station . Reference number is : X5EM7DTZ . Is there anything else? Sentence7: I have train TR9956 that departs at 15:59 and will get you there by 17:27. Would that work for you? Sentence8: TR5212 departs from cambridge and arrives at london liverpool street. It leaves on Friday 17:59. Would you like to book it? Sentence9: I am looking for a train to London Liverpool Street. Sentence10: what attractions do you have in the south? Sentence11: There is a lovely park, Wandlebury Country Park. There is a great theatre on Clifton Way as well. It is called The Junction. Do either sound interesting? Sentence12: Thank you and enjoy your stay. Sentence13: Would you like to make another reservation? Sentence14: Your train has been booked, reference number X5EM7DTZ . Is there anything else that you need help with today? Sentence15: There are many trains that travel from Cambridge to London Liverpool Street. What day and time would you like to travel? Sentence16: I do not show an entrance fee amount and the postcode is cb22ad. Can I help you with anything else today? Question: Who has spoken the sentence 2? (A) User (B) System
A:
Answer: (A) User