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: A four star with free parking would be fine Sentence2: Yes, please. I'm travelling alone, but could you give me the price as well? Sentence3: there are no 5 star guesthouse Sentence4: How about a 5 star hotel Sentence5: The TR3600 will arrive at 16:07 to Bishops Stortford. Do you need me to book that for you? Sentence6: Can yo also find a guesthouse with a five star rating? Sentence7: I'm sorry there are no five star hotels either. Would you like to look for a different place to stay? Sentence8: Booking was successful, the total fee is 8.08 GBP payable at the station. Your reference number is ODVZEU6H . Will that be all? Sentence9: There are two hotels on the west side and one located in the centre of town. Do you have a specific area you would like to be in? Sentence10: I will recommend the university arms hotel and the postcode for it is cb21ad. Sentence11: No, it doesn't matter. Which ever you recommend would be fine. I do need to get the postcode for it. Sentence12: You're welcome! Have a great day! Sentence13: Thank you, that was everything I needed for this trip. Have a great day! Sentence14: Where is your destination? And what day would you like to leave? Sentence15: I need to go to bishops' stortford on Sunday. Sentence16: I'm looking for a train arriving by 17:15 departing from cambridge. Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User