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: Alexander bed and breakfast is is the centre location. Also a 4 star cheap guest house. How does that sound to you? Sentence2: I am showing five hotels that fit your criteria. They all offer internet and parking. Is there a specific area you want to be in? Sentence3: yes that sounds nice, can you check for booking for 5 people and 3 nights starting from monday? Sentence4: Can I get that reference number please? Sentence5: No, but the hotel should be in the type of guesthouse. Sentence6: I'm sorry, there aren't any expensive guesthouses with 4 stars, but there are 18 moderately priced 4-star guesthouses. Would that be okay? Sentence7: Goodbye. Have a great day! Sentence8: Is there one available in the cheap price range? Sentence9: I have made reservations starting monday for 3 nights and 5 people the reference number is JCCYU8ZS . Is there anything else I can help you with? Sentence10: I have 7 cheap 4 star guesthouses,can I recommend autumn house? Sentence11: please recommend another hotel in that same price range. Sentence12: Yes, I will book at autumn house for 3 night for 5 people starting Monday. Sentence13: No thank you. Good bye. Sentence14: Unfortunately the booking was unsuccessful. Would you like me to look at another hotel? Sentence15: I am looking for an expensive 4 star hotel. Sentence16: Book it please. Question: Who has spoken the sentence 5? (A) User (B) System
Output: 


Answer: (B) System