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 will travel on Sunday. Sentence2: A total of five entries found. How about TR7447? It arrives at 13:51, and leaves at 13:00? Then we can get back to the restaurant reservation we had been working on. Sentence3: Where shall the train go? Sentence4: What day do you want to travel? Sentence5: Thank you, that's all I need today. Sentence6: thank you do you know if they take reservations? Do you know the hours of the business? Sentence7: The train should arrive by 16:30 and should depart from cambridge. Sentence8: Pizza Express Fen Ditton is located on Jesus Lane. The phone number is 01223324033. Sentence9: Yes, that will do. I need tickets for 3 people please. Sentence10: There is a train that leaves 13:17. Sentence11: Great. Well, I hope you have a wonderful trip. If you need anything else, don't hesitate to contact us again. Goodbye. Sentence12: Your train tickets are booked, ref #6QVPO3N3 . Can I help you with anything else today? Sentence13: I need a reservation for 3 people on saturday. Sentence14: The train should arrive by 16:30 and should depart from cambridge Sentence15: what time does that train arrive? Sentence16: Can you help me locate a restaurant called Pizza Express Fen Ditton? Sentence17: What time would you like to dine? Sentence18: I am unable to locate the hours of Pizza Express; however, they do take reservations if there is a time you would like me to try to book for you. Question: Who has spoken the sentence 7? (A) User (B) System
Output: 


Answer: (B) System