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: Nope, I think that's it for today. Have a nice one. Goodbye. Sentence2: I would like to stay in the west. I prefer the hotel to have free wifi and be a 3 star. Sentence3: I've got 19 trains that leave on Monday. What time would you like to arrive? Sentence4: Hello I am looking for a guesthouse please. Sentence5: You're welcome. Enjoy! Sentence6: Sure the postcode is cb39lh. Their address is 96 barton road. Sentence7: The TR3173 leaves at 06:54 for a duration of 105 minutes. Would you like a seat booked? Sentence8: And where will you be departing from? Sentence9: I would like the earliest train available please. Can you tell me the train ID and travel time please? Sentence10: There is the hobsons house which is 3 star and has wifi and free parking. Sentence11: Not right now, but I do need to know the fare for that train. Sentence12: I'm departing from leicester. The train should leave on monday. Sentence13: Great. I'll also need a train going to cambridge. Sentence14: Could I please get the postcode, and the address for this guesthouse? Sentence15: I have 24 guesthouses in Cambridge. Do you have an area of the town you'd like to stay in so we can narrow down this list? Sentence16: The fare will be 37.80 pounds. Can I help you with anything else? Question: Who has spoken the sentence 13? (A) User (B) System
Output: 


Answer: (B) System