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: No, that should be all I need. Thank you! Goodbye. Sentence2: Absolutely. Their postcode is cb21en. Would you like to make a reservation? Sentence3: Morning! I need a train departing from kings lynn. Sentence4: The hotel does have free parking! It's called the lensfield hotel and has 3 stars. Sentence5: Yes, the ticket costs 9.80 pounds and the ride is 47 minutes long. Can I be of any other help to you today? Sentence6: Note yet. Can you tell me more about the hotel? Sentence7: I hope you enjoy your stay. Have a good day. Sentence8: There are trains from Kings Lynn every hour from 5:11. Did you have a particular day and time of day in mind? Sentence9: The Lensfield Hotel is in the south. It's a 3 star, expensive hotel, with free wifi and parking. Would you like me to make a reservation? Sentence10: Sounds good. Could you tell me how much it costs for a ticket, and how long of a trip that will be? Sentence11: How about the TR8331 Train? It departs at 11:11 and arrives in Cambridge at 11:58. Sentence12: There is 1 expensive hotel and 3 guesthouses ranging from cheap to moderate. Which do you prefer? Sentence13: The lensfield hotel is in the expensive price range. Would you like to make a reservation? Sentence14: Yes, my train should leave on tuesday and should leave after 11:00. Sentence15: Yes. I am also looking for a place to stay in the south with free wifi. What options are there for that? Sentence16: Could you tell me the postcode of this hotel? Sentence17: Not quite yet, but can you tell me the price range of the Lensfield, please? Sentence18: Does the hotel have free parking? Question: Who has spoken the sentence 11? (A) User (B) System
Output: 


Answer: (B) System