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: I am looking to book a train for the three of us from Cambridge to Birmingham New Street on Wednesday. Sentence2: Ummm I literally just told you Birmingham New Street, and I'm not traveling today Im traveling Wednesday! Please pay attention Sentence3: I'm so sorry. There are no hotels on the west side that match your requests. Sentence4: That's okay, Cityroomz will work. Can you book it for 3 people for 2 nights starting on Tuesday? Sentence5: And where would you like to go today? Sentence6: There is one that leaves after 15:01. Sentence7: That sounds perfect. I need reservations for 3. Sentence8: We will be ready to leave after 14:30. Arrival time is not as important to us. Sentence9: Is there a certain time that you would like to arrive? Sentence10: Cityroomz is moderately priced and in the centre. Are you open to places that offer free parking, or do you specifically want to avoid it? Sentence11: Is it in the West? what is the price range? Sentence12: Reference number is : Z9RFJQ4W . Anything else you need? Sentence13: Would you like to try cityroomz? I can book it for you? Sentence14: Train TR4488 arrives at birmingham new street and cost 75.10 pounds Sentence15: I'm open to it, and I suppose the centre will do. But I'd prefer the west side if there is one. Sentence16: I need a place to stay in Cambridge that includes free wifi. I don't need free parking. Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User