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: would you like to book a room at acorn or any of the others? Sentence2: Yes, I would like a table. Sentence3: Price range and location don't matter. I would just like for it to be a hotel that has free parking. Internet is not necessary either. Sentence4: Booking was successful. The table will be reserved for 15 minutes. Reference number is : N5B6ARJP . Sentence5: Thanks. That is all for today. Have a nice day. Sentence6: I would like a table for 6 at 17:30 on Sunday. Sentence7: Acorn guest house is a guest house with free parking, or we have 28 other options. Do you have any other preferences? Sentence8: Could you tell me what area of town it is in? Sentence9: Thanks! I also need an italian restaurant to go to. I need to save some money so I would prefer it to be cheap. Sentence10: i am lookingfor a place to stay Sentence11: I would be happy to help with your request. How many will be dining, and what day/time would you like the reservation? Sentence12: The Acorn Guest House is in the north. Sentence13: Ok. I can help you with that. Are you looking for a particular price range or part of town? Sentence14: Da Vinci Pizzeria is in the north and it is cheap. Do you want to book a table? Sentence15: Not at this time. Sentence16: Your welcome. I am glad I could help. Question: Who has spoken the sentence 3? (A) User (B) System
Output: 


Answer: (B) System