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: That is all I needed thank you. Sentence2: Before I continue with the train details, was Travellers Rest booked? I didn't get a reference number. Sentence3: Is one of those expensive? If so, book me a table there for Thursday for 8 people at 13:30 please. Sentence4: No. I said eritrean food. Do yo have something? Sentence5: Would you like European food? Sentence6: There are many restaurant options available to you. What type of food would you like to eat and what is your price range? Sentence7: I don't have anything that meets those requirements. Sentence8: There's actually two expensive places, graffiti and travellers rest. Which would you prefer? Sentence9: I am also looking for a train from Cambridge on Wednesday. Sentence10: Travellers Rest sounds good. Sentence11: I would like a restaurant that serves eritrean food and in the expensive price range. Sentence12: Yes I have three. When would you like the table reserved for and for how many? Sentence13: How about British food? Sentence14: ok the address is huntingdon road in city centre, the phone # is 01223276182, and the postcode is cb30df. will there be anything else ? Sentence15: I want to dine in a place in the west. Sentence16: My sincerest apologies for that. Yes, your booking is completed and the reference number is 64UQ7M3G Sentence17: You're very welcome! Have a great day! Bye! Sentence18: what is your destination? Question: Who has spoken the sentence 12? (A) User (B) System
Output: 


Answer: (A) User