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: Yes, the price is 37.80 pounds. Would you like me to book it for you? Sentence2: There are 13 results. Is there a certain time you'd like to leave by? Sentence3: The address is 151 Hills Road. Is there anything else you'd like to know? Sentence4: Ok, thank you for calling and feel free to call again if you should need anything further. Sentence5: Can you help me find a train leaving leicester goig to cambridge? Sentence6: No, thanks. I'm looking for info on a bridge guest house. Sentence7: Nothing more, thank you. That's all I need for today. Sentence8: No, i don't need a booking yet. I just would like the address please. Sentence9: I need to travel on Friday and arrive by 19:45. Sentence10: No, I said I need to arrive by 19:45 already. Sentence11: 18:54 is the latest on tr5154 shall i book it ? Sentence12: Of course! What day will you be traveling? Sentence13: It's a moderately priced 3 star guesthouse in the south. Would you like a room? Sentence14: Could you let me know the cost? Question: Who has spoken the sentence 5? (A) User (B) System
Output: 


Answer: (B) System