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 am leaving on Monday from birmingham new stree Sentence2: The earliest train to leave after 21:00 is TR8406 at 21:40. Would you like to book this train? Sentence3: From where are you leaving and on which day? Sentence4: Can you tell me the arrival time for that train and the total travel time? Sentence5: Thanks! Have a great day! Sentence6: Is that the earliest train you have after 21:00? Sentence7: There is a train that leaves 12:40. Sentence8: Hi, could you help me find a museum to visit? Any recommendation would be great. Sentence9: It arrives at 24:23 after a total travel time of 163 minutes. Sentence10: Sure! Their address is 13 Magdalene Street. Their postcode is cb30af. Is there anything else I can help you with today? Sentence11: Thanks so much! Oh, wow it's late. I need to run. Thanks. Bye! Sentence12: can have the postcode and address please? Sentence13: I'd like to leave birmingham new street after 21:00 on Monday, and go to cambridge. Sentence14: May I recommend Cafe Jello Gallery on the West Side. Sentence15: I'm also looking for information on trains that leave after 21:00 and go to cambridge. Sentence16: There are 21 trains available. Did you have an arrival or departure date/time in mind? Question: Who has spoken the sentence 13? (A) User (B) System
Output: 


Answer: (B) System