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: Well thank you for calling. Sentence2: I'll take the hotel. Please book for 2 people starting on monday for 4 nights. Sentence3: There are two 3 stars in that area. One is a guesthouse and the other is a hotel. Would you like for me to make a recommendation? Sentence4: The price is 10.10. Can I help you with anything else? Sentence5: Booking was successful. Reference number is : XURZLO9G . Can i help with anything else? Sentence6: i would prefer 3 stars. Sentence7: No thank you but I do need to know the price. Sentence8: What is your price range? What number of stars do you prefer? 3 or 4? Sentence9: Can you help me find a place to stay in the south? Sentence10: I will be travelling on Friday and want to arrive at Stansted Airport by 13:34. Sentence11: I am seeing several options for you. Do you have a preferred departure time? Sentence12: Is there a train from cambridge that arrives by 13:45? Sentence13: Thank you for your time that is all I needed today. Sentence14: I found several trains that meet your criteria. Would you like to narrow your search by picking a particular day or a certain destination? Sentence15: No, as long as it arrives before 13:45 on friday, it's fine. Sentence16: I would recommend TR0188 which arrives by 13:08. Would you like to book a ticket? Question: Who has spoken the sentence 3? (A) User (B) System
Output: 


Answer: (B) System