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'd like to stay in a guesthouse that offers free wifi. Sentence2: North area please. Sentence3: I want to leave the restaurant by 13:00 to go back to the hotel. Sentence4: What is your price range? Sentence5: thank you and enjoy your stay in cambridge Sentence6: I would also like some Italian food in the area. Sentence7: Yes, I need a booking for this tuesday please. Sentence8: Great, I have booked a room at this hotel to your required specifications. Your booking was successful and your reference number is 468MRI75 . Sentence9: Thanks for all your help. That's all I needed today. Goodbye! Sentence10: A reservation isn't necessary. Instead, please find me a taxi to get me there. Sentence11: My price range is moderate. Sentence12: Great. I have booked your ride. The driver will be in a grey Honda. The contact number is 07036773772. Sentence13: I would like to be able to leave the restaurant by 13:00, can you book a table that allows us the time needed to eat. I also need the address for the restaurant. Sentence14: No, but there will be 6 people in my party and we'd like to stay for 4 nights starting on Tuesday, if possible. Sentence15: Fourteen good choices for you, what part of town would you prefer? Sentence16: Do you want the reservations for 6 people on Tuesday? Also, does 11:30 sound good? Sentence17: The Acorn guesthouse come highly recommended, shall I book a room for you there? Sentence18: Where will the taxi be picking you up? Sentence19: that narrows it down to 8 options. any other preferences? Sentence20: I'll be happy to help with that! Da Vinci Pizzeria is located in the same area as the hotel. Would you like to book a table? Question: Who has spoken the sentence 19? (A) User (B) System
Output: 


Answer: (B) System