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: have a great day! Sentence2: Yes almost all of them accommodate free WiFi. Is there any other preferences you would be interested in such as location, star rating and parking availability? Sentence3: Ok, I also need a hotel in the moderate price range that's a guesthouse. Nothing else matters, just pick one. Sentence4: Actually, do any of them offer free WiFi? Sentence5: What are your departure and arrival stations? Sentence6: No that is all thanks . Sentence7: I have successfully booked this train for you. You will be responsible for a 90.72 GBP fee payable at the station. Your reference number is GJ9R5F0E . Sentence8: Great, thanks for using our services, have a great day. Sentence9: TR1492 arrives in Cambridge closest to your requested time, scheduled to arrive by 15:54, it departs leicester at 14:09. Would you like to book a ticket? Sentence10: I have confirmed your reservation at archway house starting Sunday for 5 nights. Your reference number is 5ZNJHYLP . Is there anything else I can do for you? Sentence11: Bye and have a great day. Sentence12: Yes. I would like a booking for 3 people please. Sentence13: I need a train on Sunday, arriving by 16:30, please. Sentence14: I do not have preferences for location, star rating, or parking availability. I need the booking for 3 people for 5 nights starting from Sunday. Sentence15: I have many to choose from in that price range. Is there a preference for a part of town? And how many people and for how long will they be staying? Sentence16: I will be departing from Leicester and arriving in Cambridge. Question: Who has spoken the sentence 13? (A) User (B) System
Output: 


Answer: (B) System