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: Great. Can you get me a phone number and postcode? Sentence2: The Bridge Guest House is in the south and has free wifi. It is a moderately-priced with a 3-star rating. Would you like to book a room? Sentence3: No, thank you. Have a good day. Sentence4: I have booked the Royal Standard for 3 people on Friday at 16:00. Sentence5: Thank you, enjoy your stay. Sentence6: Please book a table for 3 people at 16:00 on Friday. Sentence7: Thank you. I also need a place to stay in the south. It doesn't need to have free parking, but I do need free wifi. Sentence8: Royal Standard is in the East. Sentence9: Done! Your reference number is JV5NNEDF . Can I help you with anything else? Sentence10: No. What area is royal standard in? Sentence11: The phone number for the Royal Standard restaurant is 01223247877 and postcode is CB13NL. Would you like me to book a table for you? Sentence12: I would like some information of the restaurant called Royal Standard. Sentence13: Royal Standard is a gastropub in the East, it is in the expensive price range. Would you like a reservation? Sentence14: yes, please for 7 people for 4 nights starting on tuesday. Sentence15: no, just needs to be in the south Sentence16: Is there a price range for the hotel? Question: Who has spoken the sentence 5? (A) User (B) System
Output: 


Answer: (B) System