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: Enjoy your stay in Cambridge! Sentence2: Okay well I was able to book you at The Worth House and your reference number is 86XVFEUY . Sentence3: Can you please tell me how many people will be staying and for how many nights? Sentence4: Hello, I'm looking for a guesthouse on the westside to stay. Sentence5: Yes, in the same price range please. Sentence6: Please book it for Friday,thank you. Sentence7: You are welcome. Also for your reference the Worth House does have free parking. May I help you with anything else? Sentence8: The amount of stars do not matter as long as it is in the same price range Does Worth House in the North include free parking? Sentence9: I have found one that is cheap with 4 stars, and one that is moderately priced with 3 stars? Do either of those sound appealing to you? Sentence10: Worth House in the North is 4 stars and cheap. Would you like to try it? Sentence11: Yes, 3 people for 5 nights starting on monday. Sentence12: Booking was unsuccessful. Want to try another hotel? Sentence13: Great! That's Finches Bed and Breakfast. It's located at 144 Thornton Road cb30nd. Would you like to book a stay? Sentence14: No thanks. Thanks again for your help. Sentence15: I am sorry I have no guest houses in the west. Can I look one up in another area for you? Sentence16: Are there any other places like that that also have free parking in that area? Sentence17: The cheap one with the better rating sounds appealing. Sentence18: Thanks, that's all I need. Have a nice day. Question: Who has spoken the sentence 4? (A) User (B) System
Output: 


Answer: (A) User