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: Actually, I need a train leaving from leicester after 5:30. Sentence2: The train fare from Leicester to Cambridge on Sunday is 30.24 pounds. Do you need more information? Sentence3: Yes their postcode is cb21dp. Where will you be leaving from and at what time? Sentence4: The closest I can get you to that time frame is a train that leaves from Ely at 13:35. Sentence5: Yes, what is the total travel time? Sentence6: I am looking for a restaurant in the centre of town Sentence7: How about train TR9382 leaving at 5:35 and arriving at 5:52? Sentence8: Okay the TR9823 leaves at 15:35. Sentence9: I don't have a preference for food but I would like it to be in the expensive price range. Sentence10: How about Little Seoul, a Korean restaurant that's located at 108 Regent Street City Centre. Do you need any more information? Or would you like to make a reservation? Sentence11: i misspoke i need it to leave after 15:30 Sentence12: The travel time is 105 minutes. Sentence13: You're welcome, have a great day. Sentence14: Ok, thank you, that is all the info I need right now. Sentence15: What type of food and price range are you interested in? Sentence16: How much is the train fare? Sentence17: Sounds good, can you please send the postcode. Also I need a train leaving on Sunday to Cambridge. Sentence18: I will be leaving from ely at 5:15. Question: Who has spoken the sentence 8? (A) User (B) System
Output: 


Answer: (A) User