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: Express by Holiday Inn Cambridge is in the expensive range and offers free wifi and free parking, would you like me to make a reservation for this hotel? Sentence2: TR4651 departs at 15:29 and arrives at 16:07. Would you like me to book that for you? Sentence3: I am looking for a train departing Bishops Stortford and going to Cambridge. Sentence4: Booking was successful, the total fee is 16.16 GBP payable at the station. The Reference number is: SDRN9BTG . Sentence5: Yes, please. A hotel with 2 stars with free wifi is fine. Sentence6: Yes, two tickets please. Sentence7: The address is 15-17 norman way, coldhams business park. Can I help you find anything else today? Sentence8: How about a and b guest house? Sentence9: Great, thanks. I am also looking for a hotel in town. I would need free wifi, but I don't care about parking. Sentence10: There are three choices. Would you like a list or to make a reservation at the top choice? Sentence11: The A and B actually has 4 stars. There are 3 accommodations with 2 stars, though. They are all hotels, rather than guesthouses. Would one of those be to your liking? Sentence12: Which one is the best that offers free wifi and free parking and can I get their address please? Sentence13: I am looking for something in the 2 star range. Is that 2 stars? Sentence14: Thank you for using our system! Sentence15: I would like to leave on Sunday sometime after 15:15. Sentence16: No reservation at this time but I would like the address please. Sentence17: That should be all for today. Thank you. Sentence18: I can definitely help with that. There are a lot of trains to choose from. Did you have a travel day and time in mind? Question: Who has spoken the sentence 3? (A) User (B) System
Output: 


Answer: (B) System