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: Friday for 2 people. We'll be staying for just 2 nights Sentence2: Ok. Thanks for your help. Goodbye. Sentence3: Okay, no problem! Their postcode is CB58PA. Would you like help with anything else? Sentence4: friday and can I get the reference number too please? Sentence5: Sure, what day and how many people? Sentence6: Please find me a good Chinese restaurant on the East side Sentence7: I would like to stay in the east. I do not have a price range. Sentence8: Ok, I have booked you a taxi, It is a yellow toyota and you may reach them at 07319585629. Is there anything else? Sentence9: Sure, the reference number is D0OZC26N . Is there anything else I can help you with today? Sentence10: Yes, I want to find a hotel with free wifi. Sentence11: thanks for inquiring with us Sentence12: Yes, I'll also need a taxi that will commute between the two places. I'd like to leave the hotel at 08:45. Sentence13: I show one chinese restaurant in the east, Yu Garden. Shall I make reservations for you? Sentence14: That is everything that I need. Sentence15: No at this time I would just like their postcode. Sentence16: When will you be arriving? Sentence17: Do you have an area you'd like to stay in? And what is your price range? Sentence18: Booking was successful. Reference number is : D0OZC26N . Is there anything else I can help with? Sentence19: Could you fax me the reference number, as well as any fees for additional amenities? Sentence20: The carolina bed and breakfast is a moderately prices hotel rated 4 stars. Sentence21: welcome anytime you need help Sentence22: Can you book a room for me? Question: Who has spoken the sentence 1? (A) User (B) System
Output: 


Answer: (B) System