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 need to find a train going to Stansted Airport and departing on Thursday. Sentence2: I can get my own ticket, thank you. How much will it cost? Sentence3: Thanks I have enjoyed the service Sentence4: The TR7966 is the first train of the day, arriving at 6:08. The latest train arriving before 16:45 would be the TR9427 arriving at 16:08. Would you prefer that? Sentence5: Does that train arrive by 16:45, I need to be there by then. Sentence6: You're welcome. Have a great trip! Sentence7: No, that's all Thanks Sentence8: How much is a ticket? Sentence9: THE CONVERSTION IS ABOUT THE TRAIN TICKET BOOK Sentence10: Alright, how many tickets do you need? Sentence11: Do either of those trains depart from Cambridge? I'd like to leave from there if possible. Sentence12: The fare is 10 pounds 10. May I help you with anything else? Sentence13: TR7966 does depart from Cambridge and arrives at 6:08. The latest train from Cambridge to Stansted airport on Thursday arrives at 10:10. It is train TR6242. Which do you prefer? Sentence14: the train id is TR7966 Sentence15: The 10:10 would work for me! Sentence16: The train ticket will cost you 10.10 pounds. Question: Who has spoken the sentence 13? (A) User (B) System
Output: 


Answer: (B) System