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: I would like to leave Girton College by 06:00 and arrive at the huntingdon marriott hotel. Sentence2: Could you book that for me? I'll need it friday for 2 nights. Sentence3: It's located on girton college, huntingdon road and the phone number is 01223338901 Sentence4: Yes, I can help. Can you tell me where your departure location is and a time frame you were considering? Sentence5: I show two hotels meeting your criteria. the huntingdon marriott hotel and university arms hotel. shall i book one of these for you? Sentence6: I am also looking for a place to go in the same area. Sentence7: Are either of those located in the west and include free parking? Sentence8: I think that's good, give me the address and postcode. Sentence9: I want to find an expensive hotel with a star of 4. Sentence10: Alright then, I'm going to need a taxi to get the two places. Can you hook me up with one? Sentence11: Booking completed! Booked car type : white skoda Contact number : 07702130811 Sentence12: I was able to book one night, reference number is PHX8BZ7N . Sentence13: Your booking was unsuccessful. Would you like to book for a shorter stay? Sentence14: Try just 1 night, then. Sentence15: The huntingdon marriott hotel is in the west and does indeed have free parking. Sentence16: Sure! If you like museums, I would recommend people's portraits exhibition at girton college. Does this sound good or are you thinking of something else? Question: Who has spoken the sentence 7? (A) User (B) System
Output: 


Answer: (B) System