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: Hi I need to know which train will take me to Cambridge on Monday, can you help me? Sentence2: Sure! It's 01223446100. Can I help you with anything else? Sentence3: I will need the price, travel time, and train id first please. Also looking for a park to go in town. Sentence4: We have 5 parks throughout the city, 2 in the south, 1 in the north, east, and centre. Would you like more information on any of these? Sentence5: No problem. Thanks for using Cambridge TownInfo. Goodbye. Sentence6: In the East we Cherry Hinton Water Play park, it is free to enter. Would you like the phone number or address? Sentence7: Which one is in the east? Sentence8: That's okay, can you tell me about parks in town? Sentence9: Yes I have a 13:11 that arrives in Cambridge from Kings Lynn by 13:58. Would you like me to book that for you? Sentence10: Train TR4329 has a travel time of 47 minutes with a cost of 9.80 pounds. I'd be happy to book that for you. Sentence11: What is the price please? Sentence12: I will be departing Kings Lynn after 12:00 Sentence13: TR0415 leaves at 17:58. can i help you book? Sentence14: If i could just get the phone number that would be great. Sentence15: No, that will be all for today. Thank you! Sentence16: There are 202 potential matches for your criteria. Where would you be coming from that day? Question: Who has spoken the sentence 9? (A) User (B) System
Output: 


Answer: (B) System