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: No, thank you. That's all I need. Sentence2: Ok, booking you three nights for 6 people starting Friday. Sentence3: Yes, I've got a group of six and we want to stay for three nights starting on Friday. Sentence4: The Cambridge Butterfly is not open then, shall I try another? Sentence5: Yes please find another hotel in the same price range for me. Sentence6: I would like a hotel that offers free parking. Sentence7: Thank you. Don't hesitate to call again and enjoy your stay. Sentence8: I'm looking for an economy hotel in the west. Sentence9: Thank you and have a great day. Sentence10: Thank you, I will just need a reference number for the booking. Sentence11: You have a good day too Sentence12: The Cambridge Belfry meets that criteria. Would like to me to help you book a reservation? Sentence13: I have you booked into the Finches Bed and Breakfast. Your reference number is C12WFP62 . Is there anything else I can do for your today? Sentence14: There is 1 guesthouse and 1 hotel in the cheap price range. Which would you prefer? Question: Who has spoken the sentence 3? (A) User (B) System
Output: 


Answer: (B) System