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: There are two guesthouses in the centre. I recommend el shaddai Sentence2: Ok, I also need a taxi to arrive at the restaurant by 17:30. Sentence3: La raza is a cheap restaurant that serves spanish food. Would you like their phone number? Sentence4: Is that located in the centre? Sentence5: Your booking was successful! Your reference number is OSNXB1IR . Is there anything else I can help you with today? Sentence6: Yes. Friday. 2 people. 17:30. Sentence7: The Alexander Bed and Breakfast has internet and the phone number is 01223525725. Sentence8: It is indeed in the city centre. Would you like me to make reservations for you? Sentence9: for 2 on friday Sentence10: alright, then what is your destination please Sentence11: Hello I am looking for a good, cheap, Spanish restaurant.Is there any that you can recommend? Sentence12: What car will be picking me up? Sentence13: Do they have internet and what is the phone number? Sentence14: Thank you for contacting us. Have a great trip. Goodbye. Sentence15: Does the Alexander Bed and Breakfast also have free parking? Sentence16: No problem. Where are you departing from? Sentence17: A grey honda is booked. You can call 07936397340 to reach them. Sentence18: I will be departing from the restaurant. Sentence19: Thanks for all the bookings. I'm ready for my visit now. Take care. Goodbye. Sentence20: Yes they have free parking and wifi. Sentence21: I have made your reservation at La Raza for 17:30 on Friday. Your table will be held for 15 minutes. Your reference number is OS5VNH62 . Do you need anything else? Sentence22: I guess I need to book the hotel first. Is there a guesthouse in the same area as La Raza? Sentence23: Please go ahead and book the Alexander Bed and Breakfast for me. Sentence24: I will book but I need to know how many people and for what day? Question: Who has spoken the sentence 17? (A) User (B) System
Output: 


Answer: (B) System