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'm sorry, I just need the arrival time and price, please. That is departing from cambridge, right? Sentence2: I am also looking for a place to stay. Sentence3: You are booked! Your reference number is GVQ282KF . Is there anything else I can help you with? Sentence4: TR9493 arrives at 24:45. It will cost you 17.20 pounds per ticket. Anything else? Sentence5: Can you help me find a train leaving after 20:45 going to norwich? Sentence6: Can you please book me 1 ticket for TR9493. Sentence7: How about The Ashley Hotel? I need a reservation please. Sentence8: Ok. Would you prefer a hotel or a guesthouse? Sentence9: Can you book it for me and get a reference number ? Sentence10: thanks and welcome to Cambridge Sentence11: I double checked and there are no hotels in the cheap range, in the north. The Ashley Hotel and the Lovell Lodge are moderately priced and in the north. Sentence12: I need it in the north and free wifi and cheap. Sentence13: that is it for now. thank you Sentence14: There are 9 hotels available do you have a preference on price range or which area the hotel is in? Sentence15: Great, I need a reservation for 5 people. Sentence16: Booking was successful. Reference number is : 8O3M27N5 .anything else Sentence17: There are 3 trains. They leave at 21:36, 22:36, and 23:36. Can I book one for you? Sentence18: How many tickets do you need? Sentence19: I will be travelling on Monday. Sentence20: Can you make a reservation for Friday for 5 people, 3 nights please? Sentence21: The lovell lodge is hotel 2 star in the north area of town in the moderate price range with free internet and parking. Sentence22: What day will you be arriving, how many days are you staying and for how many people? Sentence23: Oh, a hotel, for sure. Sentence24: What day of the week are you traveling? Question: Who has spoken the sentence 14? (A) User (B) System
Output: 


Answer: (A) User