You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
One example: Sentence1:i need a place to dine in the center thats expensive Sentence2: I have several options for you; do you prefer African, Asian, or British food? Sentence3: Any sort of food would be fine, as long as it is a bit expensive. Could I get the phone number for your recommendation?Question: Who has spoken the sentence 2? (A) User (B) System
Solution is here: Answer: (A) User
Explanation: The sentence 1 is said by a user because the intent of it says that the information has to be gathered from the system

Now, solve this: Sentence1: Please book a table for 8 people at 14:15 on Tuesday. Sentence2: I will book that for you now. Sentence3: no, i want one of those two restaurants. Sentence4: Both restaurants are cheap, if you are interested in a more expensive restaurant would you like me to check a different type of food? Sentence5: nandos is definitely going to be the cheapest. It's the south side and I can get you a reservation there if you want. Sentence6: Do you need help finding attractions or booking a taxi? I can assist you. Sentence7: You're welcome. Have a great day! Sentence8: Okay let's find one for you. I've got two in town. One's in the south and one is in the centre. Both are nandos locations. Sentence9: No that is it. Thank you. Sentence10: Booking was successful, the total fee is 140.8 GBP payable at the station . Reference number is : BMSH4XDW . Anything else? Sentence11: I can put you on the tr0627 it will get there a little early at 9:55, how many tickets would you like? Sentence12: Your reference number is : CE5BU114 . What else can I help you with? Sentence13: Yes, please set a reservation for me. Sentence14: i am leaving from norwich and going to cambridge. Sentence15: Where will you be departing? And where is your destination? Sentence16: I don't have a preference for location but it does need to be cheap. Sentence17: Ok thank you for your help and I need a reference number Sentence18: same group of 8 people. Sentence19: I need finding a Portuguese restaurant Sentence20: What day and time do you want to make the reservation? Also, how many people are in your party? Sentence21: That is all thanks. Sentence22: I also need a train for Tuesday that arrives by 10:45. Question: Who has spoken the sentence 15? (A) User (B) System
Solution:
Answer: (B) System