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: It does include internet along with free parking, shall I book you? Sentence2: Your best bet in the south is the Aylesbray Lodge Guest House. It's a moderately priced 4-star guesthouse. Sentence3: Alright I got your taxi and it will be a white Volkswagen and your contact number is 07658312417. Will that be all for today? Sentence4: from the hotel to the restaurant, then back. Sentence5: I was able to get a table for 4 at the good luck Chinese food takeaway on Monday at 13:00. Your confirmation number is 06YU8WNX . Sentence6: Great! I also need a place to stay in the same area as that restaurant, and I need free parking. Sentence7: I just need the address please. Sentence8: I need it to include free wifi. Sentence9: I would like Chinese food, please. Sentence10: Which one will be leaving from? Sentence11: It doesn't matter. Just book one for 4 people at 13:00 on Monday. I need the reference number. Sentence12: is there any type of food you would like ? Sentence13: I have two with an expensive price range and one in the cheap range. Would any of those work for you? Sentence14: Sure the address is 5 mowbray road. Sentence15: Both "The Good Luck Chinese Food Takeaway" and "Peking Restaurant" are in the expensive range in the south. Which would you like me to try first? Sentence16: Can you help me find a restaurant located in the south area? Sentence17: book the expensive one a table for 4 people at 13:00 on monday Sentence18: You're welcome, have a great day! Sentence19: No that is all. Thank you! Sentence20: Can you help me book a taxi to get between the two? Question: Who has spoken the sentence 17? (A) User (B) System
Output: 


Answer: (B) System