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: There are many. From where are you departing? Sentence2: You're welcome, please let me know if I can assist with anything else. Sentence3: Let's go with the Warkworth. Please make me a booking for Friday for 5 people, 3 nights. Sentence4: I also need an expensive hotel with free parking. Sentence5: Hi, I need to find out if there's a train going to leicester that leaves on Monday. Sentence6: I will be departing from Cambridge. Sentence7: There are 2 choices. The Carolina Bed and Breakfast is the first. The other is the Warkworth House. Which would you prefer? Sentence8: The TR6715 leaves at 10:21 and you'll arrive by 12:06. Would you like me to book that for you? Sentence9: I specifically am looking for a guesthouse in the east if that helps narrow things down. Sentence10: I have made that reservation and your reference number is VSHQKDBQ . Sentence11: Great I have 5 different options for you! Sentence12: I would like to leave after 9:45. Sentence13: I just need the travel time please. Sentence14: Please look for something moderately priced, then. Sentence15: Unfortunately, once I add those specifications I don't have anything that fits. Did you want to try a different price range or area? Sentence16: The travel time is 105 minutes. Will that be all? Sentence17: Great, that's all I need, thanks so much for your help! Have a great day! Sentence18: Do you have a specific time frame in mind? Sentence19: I want to leave after 09:45. Sentence20: I have 14 trains available. What time would you like to arrive by? Question: Who has spoken the sentence 3? (A) User (B) System
Output: 


Answer: (B) System