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: Will an arrival time of 22:01 work for you? Sentence2: It costs 17.90 pounds. I need to know your arrival time to determine the trainid. Sentence3: Have a nice day. Sentence4: Yes, I'll be leaving from cambridge. What's the train number and cost? Oh, and how long is the trip? Sentence5: will you be leaving cambridge? Sentence6: Where will you be traveling to? Sentence7: Yes, that would be fine. I'll need the price and travel time for that, please. Sentence8: I was able to reserve a table at Prezzo on Thursday at 16:00. The table will be reserved for 15 minutes, reference number R0Q4HL63 . Can I assist with anything else? Sentence9: No thank you that will be all Sentence10: I also would like to book a table for 3 at prezzo for 16:00 the same day I arrive or Tuesday. I need the reference number also. Sentence11: I have 2 trains going to broxbourne, do you have an arrival time preference? Sentence12: I'm looking for a train that leaves on Thursday after 21:30. Sentence13: I will be going to Broxbourne. Sentence14: i just want to leave after 21:30 Question: Who has spoken the sentence 4? (A) User (B) System
Output: 


Answer: (A) User