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: You're welcome! Have a great day! Sentence2: I have about 4 different ones. I would definitely say that Cambridge Artworks is one of the best. They have excellent exhibits. Sentence3: That should be all for today. Thank you for your help. Sentence4: Thanks. Can you tell me if there are any trains that could get me to Cambridge by 13:00? Sentence5: There are 8 to choose from, and the soonest departure is TR9892, which leaves at 05:24. Would you like me to book some tickets for you? Sentence6: Sounds good, what is the postcode for the Cambridge Artworks? Sentence7: Sure. The postcode is cb13ef. Sentence8: I'm flying in to Stansted Airport on Tuesday. Sentence9: That seems to work. I need 6 tickets. Sentence10: Sure, where are you departing from, and what day are you traveling? Sentence11: Booking was successful, the total fee is 60.59 GBP payable at the station . Reference number is : JC1Q1FZW . Sentence12: I would like to visit a museum in the east. Question: Who has spoken the sentence 2? (A) User (B) System
Output: 


Answer: (A) User