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: No thanks I will book it. Can you help me find an expensive restaurant as well? Sentence2: No. It is in the west. Need a place in north? Sentence3: Sure thing I would suggest this place graffiti. Sentence4: what time do you want to arrive? Sentence5: I need help picking the correct train that will arrive at the time I need. Sentence6: That sounds great. My math isn't the best so please tell me what the total travel time is. Sentence7: Actually, I can't find any restaurants serving creative food. Can we try a different cuisine? Sentence8: Booking was successful. The table will be reserved for 15 minutes. Reference number is V8CR4ENN . Sentence9: The closest you could arrive on Monday is the 14:09 train that will get you there by 16:30. Does that sound good? Sentence10: That is all. Have a nice day. Sentence11: I am leaving from Leicester and going to Cambridge. Sentence12: I would like to arrive by monday at 16:30. Sentence13: The travel time is 105 minutes. Shall I book it? Sentence14: I have one option for you that is called The City Stop Restaurant and it is expensive. Does this interest you? Sentence15: Yes, please. I'd like something with some creative food. Sentence16: I need a table at 20:15 on Monday. Sentence17: Make the reservation for 2 people please. Sentence18: How about european food please? Sentence19: On what day would you like to dine? Sentence20: Can you book a table for 2? Sentence21: How many people will be dining? Sentence22: What are your departure and destination sites? Sentence23: Is it in the North area? Sentence24: Great, you have one too! Question: Who has spoken the sentence 4? (A) User (B) System
Output: 


Answer: (A) User