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: There are 7 trains leaving Cambridge that can have you there by 18:15. They leave Bishops stortford starting at 05:29 and leave every 2 hours after that. Sentence2: Sure, I can check on that for you. Where would you like to go? Sentence3: Curry Garden is very nice. They're an expensive Indian restaurant in the city centre. Can I make you a reservation? Sentence4: And at what time would you like to travel? Sentence5: I would like to arrive by 18:15. Sentence6: I would like to leave cambridge on sunday. Can you check on trains for me? Sentence7: Not a specific area, just enough for the restaurant to hold 7 people. Sentence8: That's all. Thanks! Sentence9: You are so welcome. Have a great day and enjoy Cambridge! Sentence10: Yes, that would be great. Can you book me a table for 7 people on Sunday at 13:00? Sentence11: I would like to go to bishops stortford. Sentence12: Your table at Curry Garden has been reserved and will be held for 15 minutes past the reservation time. The reference number is 6X4B5F77 . Need anything else today? Sentence13: I'd like the earliest and need the train ID and travel time please. I'm also looking for an expensive Indian restaurant, what options are there? Sentence14: TR6572 is the earliest train leaving at 05:29. I found many indian restaurants. Is there a specific area you would like to be in? Question: Who has spoken the sentence 7? (A) User (B) System
Output: 


Answer: (B) System