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: Yes, I also need a train to Birmingham New Street. Sentence2: Great. How many guests should I make a reservation for and what nights would you like to stay? Sentence3: Would it be possible to book this for one night? Sentence4: I'm sorry, I was unable to book with those constraints, would you like to try another day or a shorter stay? Sentence5: Yes please, for the same 3 people. And can I have the reference number? Sentence6: I just need some more information. Where are you departing from? What day and what time do you need to leave and arrive by? Sentence7: Certainly, there are 6 guesthouses, and one hotel. Do you have any preferences I should include? Sentence8: I was able to book one night starting Sunday for 3 guests. Your reference number is 1OOWMJEN . Would you like anything else? Sentence9: If there are not any hotels that do not include free parking then that place will do. Sentence10: I would like to depart from cambridge on monday. Sentence11: There will be 3 guests for 2 nights starting Sunday. Sentence12: We are happy to be of help. Thank you for using our service. Sentence13: No, that'll be all. Thank you so much for all of your help! Sentence14: Hi, I am looking for a hotel to stay in in east cambridge. Sentence15: I've completed your booking! The reference number for your train is X4WPOS52 . The total cost is 225.3 GBP and is payable at the station. Can I help with anything else? Sentence16: The hotel in question ideally would be in the expensive price range. It doesn't need to have free parking, though. Sentence17: I have 19 available trains. TR6628 leaves at 08:01 and arrives at 10:44. Would you like me to book that for you? Sentence18: Your best bet would be the Express by Holiday Inn Cambridge. It is an expensive 2-star hotel in the east area of town with free wifi and free parking. Question: Who has spoken the sentence 8? (A) User (B) System
Output: 


Answer: (A) User