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: What time should I reserve it for? Sentence2: There will be 7 of us. Sentence3: I'm sorry, there is not an Indian restaurant in the east that is cheap. Would you prefer one that is moderately priced or expensive instead? Sentence4: Yes, I will need to book it for the same day. Sentence5: Hi. I am looking for a place to stay. Sentence6: Curry price is located in the east and moderately priced, would you like a reservation? Sentence7: I would like the table at 16:45, please. Sentence8: OK, there are 3 to choose from. Sentence9: Let me add that you were booked into the Autumn House. If that is all, have a wonderful stay in Cambridge. Goodbye. Sentence10: Please recommend the best one, I need to book a stay for 7 people starting Thursday for 2 nights. Sentence11: There are four that meet your criteria. Two in the east, one in the north, and one in the west. Which one would you like more information on? Sentence12: Great. I have all that I need. Thank you very much! Sentence13: I would prefer one that is located in the east. Sentence14: How about Indian restaurant with moderate price range and do not care about location Sentence15: I need a time and for how many people please. Sentence16: I'm looking for a cheap 4 star hotel in the east that has free wifi. Sentence17: Thanks! Are there any cheap Indian restaurants near the hotel? Sentence18: You are booked. the reference number is 6SOS8UJ4 Sentence19: I can narrow your results if you would like to be more specific. Otherwise Allenbell on Coldham Lane gets 4 stars. Sentence20: Booking was successful. Reference number is : Q884IOVI . Question: Who has spoken the sentence 11? (A) User (B) System
Output: 


Answer: (B) System