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: Is that one considered moderately priced? I'd prefer moderate over cheap. Sentence2: Thank you. That is all I need. Sentence3: I found you the TR 3434 that leaves at 15:06 and arrives by 15:56. Would you like to book some tickets? Sentence4: TR3434 has been booked for two tickets. Your reference number is HCZPLE1G . Sentence5: Well then the most I can tell you is the journey last 50 minutes and costs 16.50 pounds. Sentence6: Have a great trip. Good bye. Sentence7: I do. Finches Bed and Breakfast is a gem, rated 4 stars, but inexpensive in price. They offer free wifi and free parking. Sentence8: Actually I do now. I need it to leave on a Sunday and arrive by 16:30. Sentence9: No.I do not have a specific day or time for departure. Sentence10: Wonderful. I will book with Finches tomorrow. I am also looking for a train from Cambridge to Peterborough. Sentence11: Yes can you book two please? Sentence12: It seems that Finches is quite cheap. However, Hobson's House also fits your description, and it is moderately priced. Sentence13: Hello, I am looking for a guesthouse in the west. Do you have any recommendations? Sentence14: How many stars are they rated and could I get the phone number? Sentence15: Finches bed and breakfast has 4 stars. It's phone number is 01223276653 and Hobsons house has 3 stars. It's phone number is 01223304906 Sentence16: Is there a specific day and time you are looking to depart? Question: Who has spoken the sentence 8? (A) User (B) System
Output: 


Answer: (A) User