Detailed Instructions: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Problem:Sentence1: The TR8510 leaves at 07:35 and arrives by 07:52. Would you like me to book tickets? Sentence2: i am glad i have been of help. good day Sentence3: let's change location and the restaurant should be in the expensive price range. Sentence4: I am traveling to Cambridge and looking forward to try local restaurants. Sentence5: that type of food is not served in the west. can we change location? Sentence6: Can you see if there are any expensive european food? Sentence7: Great! Cambridge has many restaurants! Is there a certain type of food you'd like or a certain price range? Sentence8: I am also looking for a restaurant in the West and really want to have Brazilian food. Sentence9: I think that should be it for today! Thank you so much for your help, you've been very kind! Sentence10: Booking was successful! Your reference number is : JQ9093PX . Sentence11: have a great day and thanks for staying with us Sentence12: Okay, your booking was successful. Your reference number is EVDO33LE . 22 GBP is your total and it's payable at the station. Sentence13: Yes, please. I will need 5 tickets. Sentence14: Yes please, 5 people on friday at 13:30 Sentence15: Cambridge Lodge Restaurant will fit your needs. Would you like for me to book a table? Sentence16: Have a great day. Sentence17: Maybe I should figure out my train first. I am departing from Ely on Friday and want to get to Cambridge by 9:30. Sentence18: It looks like there aren't any expensive Brazilian places in the city. Would you like me to check a different price range? Question: Who has spoken the sentence 17? (A) User (B) System
Solution:
Answer: (B) System