You will be given a definition of a task first, then an example. Follow the example to solve a new instance of the task.
You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.

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: Answer: (A) User
Why? The sentence 1 is said by a user because the intent of it says that the information has to be gathered from the system

New input: Sentence1: There are over 200 trains going to Cambridge on Thursday. Where will you be departing from? Sentence2: Yes, please. I am also looking for a place to stay, ideally a hotel with a 4 star rating in the moderate price range. Sentence3: I would like to go to Cambridge Sentence4: I need you to find me somewhere to stay with a 4 star rating in the east, moderately priced, and with wifi. Type doesn't matter. Sentence5: I hve booked it as requested, the reference number is 3W8OKRO8, any further questions today? Sentence6: I still have some requests for the hotel, before you book it. Sentence7: Then in that case, I recommend the TR0209 which departs from Kings Lynn at 16:11 and gets into Cambridge at 16:58. Would you like me to book it for you? Sentence8: Ok I Am going to book a cheaper hotel for you ,have a good day,thank you. Sentence9: You're welcome. Please have a nice day and thank you for calling. Sentence10: Would you help me book a train for Thursday, please? Sentence11: That doesnt matter. Choose your best recommendation and please book it for 2 people on thursday for 5 nights. And do remember to send me the reference number Sentence12: Okay what can I do for you? Sentence13: I think that covers everything. Thanks for your help. Sentence14: I would like to leave after 15:45. Sentence15: I will be leaving from Kings Lynn. Sentence16: There are 3 in the east area. Do you need free parking? Sentence17: That narrows us down to about 19 trains. Do you have a time you would like to leave after or arrive by? Sentence18: Yes, where would you like to go to? Sentence19: I would like a cheaper hotel. Sentence20: There is nothing in the price range you mentioned. Would you be willing to stay at a cheap hotel or an expensive hotel? Question: Who has spoken the sentence 7? (A) User (B) System
Solution:
Answer: (B) System