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: Can it get there by 18:15? And can you get tickets for two? Sentence2: You're welcome and have a wonderful trip! Sentence3: Not now. I would like to get the postcode, please. Sentence4: Thank you. I also need to find a train departing from Leicester. Sentence5: I need it to be a hotel, not a guesthouse. Sentence6: Great, if you could book that one for 2 people and provide me with the reference number, I would appreciate it. Sentence7: There are 13 hotels north of cambridge. What price range would you prefer? Do you require internet or parking? Sentence8: Certainly! TR2985 will depart Leicester at 16:09 and arrive in Cambridge at 17:54. That one sounds like it's better for your time frame. Sentence9: Your arrival time would be 06:54 would you like for me to find another train for you? Sentence10: I can certainly help you with that! Can I assume you're coming from Leicester to fair Cambridge? What day and time would you like to travel? Sentence11: Yes, I'm looking for hotels in the north area. Sentence12: Yes, you're right. I need to leave on Monday, and I need to arrive by 18:15. Sentence13: Would you like me to book you a room at the Avalon on 62 Gilbert Road? Sentence14: Sure, I have booked the train for people on monday on TR2985, your reference number is 730ZJ7M6 . Is there anything else I can do for you today? Sentence15: There is not. Thank you so much! Sentence16: How about the ashley hotel, it is in the north with a 2 star rating with free parking and internet. Would you like to reserve a room? Sentence17: I found TR3173 leaving at 5:09 would that work? Sentence18: Yes, please. I'd rather not be that early. Sentence19: I don't care about price range or parking, but I do require free WiFi. Sentence20: Certainly, the postcode for the Ashley Hotel is cb41er. Is there anything else I can do for you? Question: Who has spoken the sentence 4? (A) User (B) System
Output: 


Answer: (A) User