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: Could you help me find a train that leaves on a wednesday after 8:45? Sentence2: I have the aylesbray lodge guest house or the bridge guest house. Would you like me to book one for you today? Sentence3: The postal code is cb17sr. They do have internet. Is there anything else I could help you with? Sentence4: I need it for four people please. Sentence5: Can you find one in the south, actually? Sentence6: The first train after 08:45 is the TR1672, which leaves at 09:09. Sentence7: Can you try booking at the Aylesbray lodge for 2 nights, and may I have the postal code? Sentence8: I actually think I will book myself later. If I could just get the postal code and if they have internet? Sentence9: Great thank you I also need to find a guesthouse in a moderate price range. Sentence10: Of course. Your reference number is TE5QEU4H . The total is 151.19 payable at the station. Sentence11: Can you tell me where you are leaving from and where you are headed to? Sentence12: Certainly. I need to travel from Leicester to Cambridge. Sentence13: There are several guesthouses in the moderate price rance. I can recommend the Archway House. They're in the north, have 4 stars, and offer both free wifi and parking. Sentence14: How many guest will be staying with you at the lodge? Will the booking be for 4 guests also? Sentence15: No that's all the info I needed. Thanks for all your help Sentence16: Okay, have a good day. Question: Who has spoken the sentence 14? (A) User (B) System
Output: 


Answer: (A) User