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: Alright, all I need the travel time and that should be all, thanks! Sentence2: I'm looking for a cheap hotel, please. Sentence3: The best match for your time is the train TR6517 which leaves at 11:35. Do you want me to book it for you? Sentence4: How about the Allenbell? Sentence5: Is this train going to Ely or departing Ely? I believe I made a mistake is saying going to Ely when I should be departing Ely arriving in Cambridge. Sentence6: I am looking for a hotel with a 4 star rating and free parking Sentence7: There are 8 hotels that meet your needs. Would you like to narrow it down by area? Sentence8: What type of hotel are you looking for? We have 19 with free parking and rated 4 star. Sentence9: The Allenbell is located at 517a coldham lane, and their postcode is cb13js. The phone number is 01223210353. Is there anything else I can do for you today? Sentence10: Doesn't matter where in Cambridge. Sentence11: Perfect! what's the phone number, postcode, and address for that place? Sentence12: That is departing ely and arriving in cambridge Sentence13: The travel time is 17 minutes. Thank you for allowing me to assist you! Sentence14: Yes, I need a train to Ely from Cambridge on Sunday, leaving at 11:30. Question: Who has spoken the sentence 5? (A) User (B) System
Output: 


Answer: (B) System