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: need any other help? Sentence2: Great! Enjoy your stay! Sentence3: Does this location include free wifi? Sentence4: I'm also looking for a place to stay in the centre of town that includes free parking. Sentence5: What is your price range? Sentence6: No. Thank you for your help. Sentence7: That's okay, see if you can make the booking for one night instead. Sentence8: That one would be great. Can I get 2 tickets on that train, and the reference number once it's booked? Sentence9: Yes, El Shaddai includes free parking. Would you like to book a stay, or perhaps you would like directions? Sentence10: I'm sorry, that reservation wasn't available. Perhaps you could book another day, or a different length of stay? Sentence11: Yes, I was wondering if you could help me find a train leaving from Cambridge. Sentence12: Does the El Shaddai include free wifi? Sentence13: Certainly. I have now reserved two tickets for you, which you can pay for at the station. Your reference number is 13GQ9S3A . Sentence14: I have train TR7713 that departs at 17:59 and arrives at 19:27. Would that work for you or would you like something earlier? Sentence15: I'd like to go to london liverpool street on Sunday. I need to get there by 21:00. Sentence16: No problem! Where will you be going to and on what day? Sentence17: Can I recommend el shaddia guesthouse? Sentence18: I am looking for a cheap place to stay. Sentence19: Yes it does, would you like me to make a booking for you? Sentence20: The booking was successful! Your reference number is 7V39SM46 . Sentence21: Yes. Could you make it for 2 nights/ 2 people starting on friday. Sentence22: Thank you very much for all your help. Question: Who has spoken the sentence 1? (A) User (B) System
Output: 


Answer: (B) System