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: Your booking is all set. The reference number is MNOLS7EN . Can I help with anything else? Sentence2: yes i will take the first choice can you book it for 4 people for 2 nights starting wednesday and i need a reference number Sentence3: Have a wonderful day! Sentence4: That narrows it down to three: the Allenbell, Autumn House, and Leverton House. Do any of these sound good to you? Sentence5: That's all. Thanks for the help! Sentence6: That sounds great! Can I get a table for 4 at 13:15 Wednesday? Sentence7: We have The Missing Sock, they serve international cuisine. Would you like me to reserve a table for you? Sentence8: Your booking is all set! The reference number is 7TT8FO52 . Is there anything else you need? Sentence9: I would prefer to stay on the East side, with free parking available. Sentence10: Hi, I'll be visiting soon and can't wait to try local restaurants. I need a cheap place to stay and would like to try a guesthouse. Any recommendations? Sentence11: Yes, I am also looking for a restaurant in the same area as the hotel within the same price range as the hotel. Sentence12: Great! There are 9 guesthouses in Cambridge that are cheap. Is there a certain area you prefer? Question: Who has spoken the sentence 11? (A) User (B) System
Solution:
Answer: (B) System