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 would like the reference number and that will be all today. Sentence2: I don't need free parking. I do care about moderate price range in the north with 4 stars. Sentence3: Yes, please. I need to book it for 3 people for 3 nights starting Saturday. Sentence4: Is there anything else I can help with today? Sentence5: christ's college is found in the center their address is saint andrew's street and their poscode is cb23bu. You can reach them on the number 01223334900 Sentence6: Okay! What type of place would you like to visit? Sentence7: Booking was successful. Reference number is : 6GVW9A45 . Sentence8: Your booking was successful. Would you like the reference number? Sentence9: Yes, please recommend a guesthouse based on recent reviews. Sentence10: Thank you very much. Sentence11: There are no hotels but there are 7 guesthouses in the north meeting your requirements. Do you want me to choose a guesthouse for you? Sentence12: Do you need help with anything else? Sentence13: There is not one listed, do you want to try a 3 star hotel ? Sentence14: Yeah, I need to book a 4-star hotel in the north that's mid priced. Sentence15: Have a wonderful night. Sentence16: Okay, I recommend avalon. Do you want me to book? Sentence17: i'm looking for places to go in town. Sentence18: No thank you, I am all taken care of now. Thanks, and goodbye! Sentence19: Thank you for your time. Sentence20: College's seem nice, can you suggest one and give me the address, postcode and phone number if its not too much trouble Question: Who has spoken the sentence 7? (A) User (B) System
Output: 


Answer: (B) System