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: I have Gonville Hotel in centre area or The Lensfield hotel in the south area. What is your preference? Sentence2: I'm also looking for a hotel to stay in. Preferably a 3 star one. Sentence3: I'm planning to leave on Thursday. Sentence4: Which day are you planning to travel? Sentence5: The Gonville would be great, could you get me the phone number, price range, and postcode? Sentence6: They are in the expensive range, located on gonville place, postal code cb11ly, they are reachable at 01223366611, may I assist with anything else? Sentence7: There are several trains leaving Norwich, what day are you leaving and where are you going? I also need the time you want to leave or arrive. Sentence8: Yes the departure time is 15:16. I booked you for 8 on Train ID TR8040. The Reference number is : 1HY8AJ7Y . Sentence9: No thank you for everything. Sentence10: You are welcome. Have a good evening. Sentence11: I want a train leaving from norwich. Sentence12: As long as you mean a 15:16 departure, I'll take 8 tickets, please. Sentence13: I have a 5:16 departure to Cambridge that arrives at 16:36. Would that do? Sentence14: What area of town would you like? Do you have a price range in mind? Sentence15: I would like to leave after 14:30 and go to Cambridge, please. Sentence16: I don't have a preference for either, but I'd like it to be in the type of hotel. I'll also need free parking. Question: Who has spoken the sentence 15? (A) User (B) System
Output: 


Answer: (B) System