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: da vinci pizzeria is in the north. Would you like me to book it? Sentence2: Thanks for your help, goodbye! Sentence3: I would prefer Italian food and to be in the same area as the hotel. Thank you. Sentence4: Yes they are. What area would you prefer? Sentence5: Yes, please. Again, there are 5 of us on Sunday. Book us for 11:00. Sentence6: I want to depart from my hotel and arrive at the restaurant in time for my 11:00 reservation. Please tell me the car type and contact number for my taxi Sentence7: i recommend home from home. can i book for you? Sentence8: Your booking was successful. Your reference number is LQS5D89F . What type of food would you like? Sentence9: For your taxi, I need to know your departure location and a time you want to leave after or arrive by Sentence10: I would like a taxi to the restaurant. Sentence11: Please recommend one that is in the North. Wifi not a necessity. Sentence12: Booked! The reference number is 4JW5ITOL . Anything else today? Sentence13: I am looking for a place to stay and I want it to be a guesthouse. Sentence14: Are any of those 4 star? Sentence15: There are a few good guest houses to choose from, like a and b guest house, acorn guest house, alexander bed and breakfast, and allenbell are all 4 stars. Sentence16: Contact them at 07437768895, it is a red Honda. Sentence17: You're welcome and enjoy your visit. Sentence18: Yes book it for 5 people and 4 nights starting from sunday please. Can you suggest good restaurants in the area as well? Question: Who has spoken the sentence 9? (A) User (B) System
Output: 


Answer: (B) System