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: Sure, in what area of town were you looking to stay in? What is your price range? Sentence2: Yes it most certainly does. Sentence3: Great. I am also looking for a particular attraction called Old Schools. Sentence4: Yes, actually. That would be very helpful. I want to leave the hotel by 11:00 to head over there. Sentence5: Does it have free parking Sentence6: it is a type of architecture located in the centre of town Sentence7: I booked that for you and the contac number is 07901150688 Sentence8: Thank you so much for calling. I hope you enjoy your trip. Goodbye. Sentence9: I'm not looking for a specific area but I would like it to be a 2 star and expensive please. Sentence10: Okay, the express by holiday inn cambridge matches the criteria. The address is 15-17 norman way, coldhams business park. Would you like me to book a reservation? Sentence11: May I please get the address for Old Schools? Sentence12: Can you help me find a place to stay for my upcoming trip? I am excited to see some of your local attractions. Sentence13: Old Schools are located on Trinity Lane. Can I book a taxi for you to visit this attraction? Sentence14: I have booked that for you. Your confirmation number is WPKWG3R7 . Sentence15: Thank you that is all. Sentence16: Great. Please book it for 3 people for 2 nights starting on tuesday. Question: Who has spoken the sentence 3? (A) User (B) System
Output: 


Answer: (B) System