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 can definitely help with that. What day would you like to travel? And what is your desired destination? Sentence2: Yes, would you be able to help me find a train leaving from Cambridge? Sentence3: I'm looking to stay in a guesthouse while I'm there. I'd like a place that has free parking. Sentence4: The first train to leave after 14:30 is TR6982 and leaves at 15:11 Sentence5: OK, could you book me 7 tickets for the TR6982? Sentence6: There are a number of guesthouses. Do you have a price range and an area that you prefer? Sentence7: Not particularly. I just need one for 5 nights starting Monday. Whichever you recommend. Sentence8: I want to travel on Saturday from Cambridge to Kings Lynn. Sentence9: You're booked at the Acorn Guesthouse for 3 nights, 7 people, starting on Monday. Your reference number is WU51A5WI . Can I help with anything else today? Sentence10: I do not need anymore help. Thank you for your help. Sentence11: Is there a specific area of town you would like to stay in? Sentence12: I am very sorry, but I was unable to book a guesthouse, would you be able to check in at a later day, or could you stay for a shorter period? Sentence13: No. What is available? Sentence14: Booking was successful, the total fee is 54.88 GBP payable at the station. Is there anything else I can help you with? Sentence15: I would like to leave after 14:30. Could you find me a train for that time? Sentence16: Not at the moment. Can you recommend any moderately priced guesthouses to accommodate 7 people? Sentence17: There are 19 different trains on Saturday from Cambridge to Kings Lynn. What time would you like to arrive by? Sentence18: Can you book it for 3 nights? Sentence19: Thank you for allowing me to assist you. Enjoy your stay! Let us know if there's anything we can assist you with in the future! Sentence20: I have 21 places that fit what you want. Do you have a price preference? Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User