Definition: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.

Positive Example 1 -
Input: 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
Output: Answer: (A) User

Positive Example 2 -
Input: Sentence1: Guten Tag, I am staying overnight in Cambridge and need a place to sleep. I need free parking and internet. Sentence2: I have 4 different options for you. I have two cheaper guesthouses and two expensive hotels. Do you have a preference? Sentence3: No, but I'd really like to be on the south end of the city. Do any of those fit the bill? Sentence4: Sure. Does price matter? We can narrow it down and find exactly what you need. Question: Who has spoken the sentence 4? (A) User (B) System
Output: Answer: (B) System

Negative Example 1 -
Input: Sentence1: I am looking for a hotel named alyesbray lodge guest house. Sentence2: i have their info, what would you like to know? Sentence3: I would like to book a reservation for it. Can you help me with that? Sentence4: I sure can. First, I will need to know when you want your stay to begin and how many days you'll be staying. Also, how many people will be staying? Question: Who has spoken the sentence 1? (A) User (B) System
Output: Answer: (A) User

Negative Example 2 -
Input: Sentence1: Hi there! Can you give me some info on Cityroomz?. Sentence2: Cityroomz is located at Sleeperz Hotel, Station Road in the Centre area. It is a moderatley priced hotel with a 0 star rating. Would you like to book a room? Sentence3: Yes please. I need it for 7 people for 3 nights starting on tuesday. Sentence4: How many days would you like to book it for? Question: Who has spoken the sentence 4? (A) User (B) System
Output: Answer: (A) User

Now complete the following example -
Input: Sentence1: Thank you so much! Sentence2: Yes. Thanks, all set. Sentence3: Much appreciated. Goodbye. Sentence4: We have 21 trains coming form ely to cambridge this week, what day will you need that? Sentence5: What's their address and postcode? Sentence6: I'm looking for a train leaving after 19:00 departing from ely. Sentence7: Booking was successful, the total fee is 13.2 GBP payable at the station. Your reference number is AUHGVOLR . Will that be all for today? Sentence8: I think the 19:35 will work. Can I book that for 3 people? Sentence9: Their address is cambridge passenger cruisers, jubilee house, cb43ax. Will that be all? Sentence10: We have 3 trains from Ely to Cambridge on Thursday leaving at 19:35, 21:35 and 23:35. Sentence11: We were looking to do something in the north, something with the boats. Any suggestions? Sentence12: I need the train on Thursday. Sentence13: You are welcome! Enjoy your trip! Sentence14: riverboat georgina is located in the north. Question: Who has spoken the sentence 8? (A) User (B) System
Output: 


Answer: (A) User