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: The west please. Sentence2: The price does not matter. Please make a recommendation and book it for the same group of people and 4 nights starting from the same day. Sentence3: I have 5 different options for you. They vary in price range. Did you have a certain price range in mind? Sentence4: Definitely! I have places from cheap to expensive, though my favorite is Yippee Noodle Bar, which is moderately-priced. Sentence5: Great, I also need a hotel room if you can help me find something. Sentence6: I'd be happy to make a reservation for you. What day/time will you be dining, and how many are in your party? Sentence7: I would like Yippee. Sentence8: I'd like to find a restaurant that offers Asian Oriental cuisine, in the centre, if possible. Sentence9: OK, you are booked in Cityroomz as requested, the reference number is A1ZBLCZ3, any further questions? Sentence10: There are 4 in that area do you have a price range or type of hotel you prefer? Sentence11: Monday, 19:00, for 6 people. Sentence12: no and thank you for your help Sentence13: Ok, have a great day! Sentence14: I have successfully reserved a table for your party of 6 at the Yippee Noodle Bar for Monday at 19:00. Your reference number is XSQHK9YG Sentence15: Sure. We have several places ready to book. Which part of town would you like? Sentence16: The hotel doesn't need to include internet. It should be in the same area as the restaurant. Question: Who has spoken the sentence 14? (A) User (B) System
Output: 


Answer: (A) User