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: Try booking the bridge house please. Sentence2: I have 14 entries, would you like it to have free parking? Sentence3: I have booked the Hamilton Lodge for you. Starting on Saturday for 2 nights for 7 people. Your reference number is 63GDBABK . Is there anything else I can do for you? Sentence4: Yes please if it's in the same price range. Sentence5: I have 32 hotels with free wifi. Is there a specific part of town you would like to stay in? Sentence6: Okay great. That is all I need. Sentence7: I have the bridge house south area, the hamilton lodge in the north and hobsons house in the west. Which one would you like me to book? Sentence8: I would like 3 stars or higher please Sentence9: I'm sorry, that one is unavailable. Would you like to try another? Sentence10: So glad I could help. Have a great day! Good-Bye! Sentence11: I have the Hamilton Lodge in the north, would you like me to book that one? Sentence12: No, it just needs to be in the moderate price range. I prefer guesthouses. Sentence13: Yes, please. And I will need the reference number. Sentence14: Is there a star rating you would prefer to stay at Sentence15: That does not matter. What ones have availability for 7 people for 2 nights starting on Saturday? Sentence16: I am looking for a place to stay with free wifi. Question: Who has spoken the sentence 2? (A) User (B) System
Output: 


Answer: (A) User