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 do not, what price ranges are the restaurants in? Sentence2: I have four options for european food. There is our moderate priced restaurants de luca cucina and bar and riverside brasserie. We have an expensive option with darrys cookhouse and wine shop. We also have the river bar steakhouse and grill. I would recommend the riverside brasserie restaurant that is also located in centre. Should I book a reservation for you? Sentence3: Sorry, no results here. Want to try a different food type or area? Sentence4: Can you pick one and just let me know the price range, I'm comfortable with all. Sentence5: Okay, have a good day! Bye! Sentence6: Booking was successful.Reference number is : K15XS51B . is there and other query? Sentence7: Are you sure there are no modern european restaurants in the centre? Sentence8: There are a few. Do you have a price preference? Sentence9: Thanks for taking care of the hotel. I have another request. This time for a restaurant in the same area as the hotel. Sentence10: I have all prices ranges. Sentence11: I show 6 guesthouse and one hotel. Would you like more information? Sentence12: I want somewhere with 3 stars and free wifi. Sentence13: Are there any places serving modern european food? Sentence14: Alright what kind of food would you like today? Sentence15: Yes, please try a hotel in the centre Sentence16: I actually don't need anything else today. Thank you! Bye! Sentence17: Yes, that'd be great. I need it booked for 5 people and for 2 nights starting from sunday. Sentence18: I need help finding a place to stay in the east. Sentence19: I'm sorry there's nothing that matches. Would you like me to try a different area? Sentence20: The Gonville Hotel is an expensive 3 star hotel in the Centre area, I would be happy to book you a reservation if you would like? Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User