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: How many people and how long will your stay be for? Sentence2: How about price range what do you prefer there? Sentence3: Booking completed! Booked car type : red lexus Contact number : 07029440032 Sentence4: I will want to start from Monday on. Sentence5: Have a nice day. Sentence6: Booking was successful. The table will be reserved for 15 minutes. Reference number is : JRA6G1IN. Anything else I can help you with? Sentence7: I'm looking for something with a 4 star rating and also free parking. Is anything like that available? Sentence8: I need a place to stay. What's available on the west side, with free wifi? Sentence9: There are 2 hotels and 2 guesthouses with free wifi in the west side. Which type of place do you want? Sentence10: What day will you be checking in? Sentence11: Yes, I do need a reservation. Sentence12: I need to get a taxi. I want to go from the Huntingdon to get to Don Pasquale by 11:30. Sentence13: Yes please. I need a table for 3 at 11:30 on Monday. Sentence14: 6 people and for a week. Sentence15: That will be all for today! Thanks so much for your help! Sentence16: This is an italian restaurant. Their phone number is 01223350106 Their addres is 12 Market Hill City Centre CB23NJ. May I make a reservation for you? Sentence17: I also need information about a restaurant don pasquale pizzeria. Sentence18: Okay the booking was successful starting on Monday for a week for six people. Your reference number is 6J7RDABU . Anything else I can help you with? Sentence19: How about the Huntingdon Marriott hotel. It's address is kingfisher way hinchinbrook business park, huntingdon, postcode pe296fl. Would you like to make a reservation? Sentence20: I prefer a hotel rather than a guest house. Any price range is fine as long as it meets my other criteria. Can you make a suggestion? Question: Who has spoken the sentence 14? (A) User (B) System
Output: 


Answer: (A) User