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: Booking is complete, look for a grey ford, the phone number is 07959689504, may I assist with anything else? Sentence2: Happy to help! Enjoy your stay. Sentence3: Cambridge Artworks is located at 5 Greens Road in postcode cb13ef, and it's free to enter. Sentence4: I need to find a place to eat and would prefer Indian food. Sentence5: Yes please. Could you make a reservation for 8 at 18:15 on Wednesday? Sentence6: I have booked you at the curry prince. Reference number is MRQELLG2 . May I help you with anything else today? Sentence7: Could I get the address, postcode and entrance fee? Sentence8: Cool. Can you help me book a taxi? I need it to get to the restaurant from the museum by my reservation time. Sentence9: There are two indian restaurants in the east, curry price and rajmahal. Would you like me to book you a table at one? Sentence10: Yes, I could use a suggestion on a great museum to visit after we eat at the restaurant. Sentence11: I would love for it to be in the east and be moderately priced. Sentence12: I recommend Cambridge Artworks, which is a free museum in the same part of town as your restaurant. Sentence13: how about 17:15. Get me a reference number for that. Sentence14: It would be my pleasure to assist you in your restaurant search. Do you have a preference on price point and/or area of the city? Sentence15: That's all, you've been a great help! Sentence16: I'm sorry sir, neither restaurant is available at that moment. Do you want to try a different day or time? Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User