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: Sure. how many will be traveling? Sentence2: The Cambridge corn exchange is a theatre and the post code is cb23qe. Would you like any more information? Sentence3: No problem! Have a great day. Sentence4: Okay, can you find attractions near the centre? Sentence5: thank you, though there are many choices there isn't a 21:15 so I guess I will take the 21:40 on Friday. Sentence6: It's just me. Can I have the price, travel time, and train ID? Also, do you have any places I can go when I get there? Sentence7: Could you suggest me one? Also let me know of what type of attraction it is and the place's postcode. Sentence8: Thank you, Enjoy the Cambridge Exchange! Sentence9: Wonderful help, thanks Sentence10: Unfortunately no. The earliest that day departs at 21:40. Sentence11: Okay. Can you book that for me please? Sentence12: Is there a train leaving before that? Sentence13: Thanks, I have all I need. Have a nice day. Sentence14: Price is 10.10 pounds, the travel time is 28 minutes, and the train ID is TR4067. I'm sorry, but I don't see any attractions at the Stansted Airport. Sentence15: There are 44 attractions near the center of town. Is there a certain type you're looking for? Sentence16: I'm wondering if there is a train leaving at 21:15 that will take me to the Stansted Airport. Question: Who has spoken the sentence 11? (A) User (B) System
Output: 


Answer: (B) System