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: Unfortunately I need to leave after 09:30, is there one available then? Sentence2: Thank you for using our system! Sentence3: By travel time, I mean the duration of the train trip. Sentence4: That will probably work fine. Can you tell me the travel time for that train? Sentence5: No, that's not necessary. I can book it later. Thanks. Have a good day. Sentence6: The first train of Sunday leaves at 11:21 and arrives by 12:10. Does that meet your requirements? Sentence7: Thanks again. Goodbye! Sentence8: Thank you! Goodbye. Sentence9: I am leaving out of Cambridge. I need the ticket for Sunday. Sentence10: Sure thing, train TR8464 leaves at 11:21. Will that work? Sentence11: TR5390 is the first train of the day leaving at 5:21 would that work for you? Sentence12: I'm sorry. That comes out to a 49-minute train ride. Does that sound agreeable to you? Sentence13: Yes that will be fine. Sentence14: I need a train to Stevenage. Sentence15: Am I booking one ticket? Sentence16: Absolutely. From where would you like to depart? Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User