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. What's the area for the Cafe Jello Gallery? Sentence2: Alright, can you find me a train to Leicester on Tuesday after 20:15? Sentence3: The area doesn't matter, but I do need to know the entrance fee. Sentence4: It doesn't matter. Can you just recommend one and tell me the entrance fee? Sentence5: You are welcome. Thank you for getting in touch with Cambridge TownInfo Centre. Goodbye. Sentence6: There are 4 trains that depart Cambridge for Leicester after 20:15. The first one leaves at 20:21, and they run every hour. Sentence7: No, thank you. I believe that is all I need today. Sentence8: Cafe jello gallery has a free admission. Sentence9: Can you tell me which museums I can go to in Cambridge? Sentence10: That one is located in the west. Sentence11: There are so many. In order to narrow it down, do you want something with free admission. And are you open to a suggestion? Sentence12: TR0378 arrives at 22:06. The travel time is 105 minutes. Can I help you with anything else? Sentence13: I'm sorry, my mind is not all there today. I have not found a train for you yet. Where are you departing from? Sentence14: You are free to choose whichever one you want. There are 23 choices, is there a preference by area? Sentence15: Please pick the earliest one and give me the following info about them: travel time, train ID, and arrival time Sentence16: I am leaving from Cambridge and going to Leicester. Sentence17: ok you are set Sentence18: What is the train ID you found? Question: Who has spoken the sentence 4? (A) User (B) System
Output: 


Answer: (A) User