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: The first train departing Sunday after 11:15 is TR1152 leaving at 12:11. Would you like to book a ticket? Sentence2: Of course I can help you with that. What amenities are you looking for? Sentence3: Actually, I won't be needing a hotel after all. Thank you for your help. Sentence4: Any one would do but I would need the phone number Sentence5: I'm looking to take a train on Sunday leaving from Kings Lynn. Sentence6: The price is 7.84 pounds per ticket. Sentence7: all saints church is a attraction of architecture in the centre phone is 01223452587 Sentence8: Glad I could help you find what you were looking for. Hope you have a great day. Sentence9: I would like to leave after 11:15. Sentence10: Okay. And what would be the length of travel? Sentence11: what is its price? Sentence12: I would be happy to assist you with that. What type of attraction are you interested in? Sentence13: Your welcome. Are you sure there is nothing else I can assist you with today? Sentence14: I would be happy to assist you. Those trains leave every hour, starting at 05:11. What time would you like to arrive in Cambridge. Sentence15: No, that is all I need today. Again, thank you. Sentence16: I am looking for information in Cambridge Sentence17: Can we also look at hotels in the same area as the attraction? Sentence18: Is there anything in particular you are looking for? Hotels or restaurants perhaps? Sentence19: Thanks for the train info. I am also interested in visiting attractions in the center of Cambridge. Sentence20: travel time is 47 minutes Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User