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: No that is all. Thank you for helping me. Sentence2: Yes, I would like a moderately priced Italian restaurant. Sentence3: Can you book reservations for place to eat for me. Sentence4: No preference, what would you suggest? Sentence5: I need to get to Peterborough. Can you find me a train that gets there by 13:30? Sentence6: I would also like to find a museum in town. Sentence7: The postcode for the gallery is cb11ln. Can I help with anything else? Sentence8: There are many choices for restaurants in town. Do you have a specific area, price range, or type of cuisine? Sentence9: Yes, what is the postcode for the broughton house gallery? Sentence10: I will need three tickets please. Sentence11: The train ID is TR1108, and the departure time is 12:34, but to book your ticket I'll need to ask - how many tickets would you like to purchase? Sentence12: Hmm, my restaurant reservation system seems to be down at the moment. Is there anything else I can help you with right now? Sentence13: You are all ready with three tickets. The total fee is 49.5 and you will pay that at the station. Reference number is JPNLH7QF . Sentence14: You are welcome. Thanks for using our service. Have a good day. Goodbye. Sentence15: I will depart from Cambridge on Wednesday. Sentence16: The train closest to your requested time is the TR1108, leaving Cambridge at 12:34, arriving Peterborough at 13:24. Would you like to book a ticket? Sentence17: Please and I would appreciate it if you could give me the train ID, departure time, and booking reference. Sentence18: The broughton house gallery is popular and it is free. It is in the center of town at 98 king street. Do you need more information? Sentence19: There are 23 museum options in town. Can you help me by narrowing down where in town you'd like the museum to be? Sentence20: What day will you travel on ? Question: Who has spoken the sentence 18? (A) User (B) System
Output: 


Answer: (A) User