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: Thank you. That is all I need. Sentence2: Can you help me find a place to stay Sentence3: I'm looking for a Chinese restaurant on the south side of town. Sentence4: Great your reference number is 4U18B867 Sentence5: Yes please. Let's try the other one you mentioned. Sentence6: All right, a white ford will arrive by 17:30. The contact number is 07655989652. Sentence7: Book me a table for 7 on Thursday at 17:30 and send me a reference number. Thank you. Sentence8: Thank you for using this system! Sentence9: Would you like to book cheap or expensive? Sentence10: No problem, there's the aylesbray lodge guest house which is also in the south area. It's moderately priced, four stars, with parking and internet. Would you like me to book this for you? Sentence11: I don't care what price range it is in. I will need a reference number please for the reservation. Sentence12: Yes I need to book it for 7 people, for 4 nights starting thursday, can I get the reference number? Sentence13: Ok, I've booked a table for 7 at 17:30 on thursday at the good luck chinese food takeaway. Your reference number is LA1YYDOO . Sentence14: Thank you. I will also need a taxi so that I can commute between these two locations and I need it to arrive at 17:30. Sentence15: There are 2 expensive and 1 cheap restaurant matching your criteria. Which price range do you prefer? Sentence16: Let's decide on the lucky star. Unfortunately, that appears to already be booked. Do you want to try one of the others? Question: Who has spoken the sentence 4? (A) User (B) System
Output: 


Answer: (A) User