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 will be departing from Leicester. Sentence2: Thank you, and have a pleasant trip. Goodbye. Sentence3: Sure. The TR8292 departs at 13:09. The ride is 105 minutes long. Do you have any other questions? Sentence4: I don't actually need to book at the moment. I just need to know the departure time and travel time for this train, if you don't mind. Sentence5: I am going to cambridge Sentence6: TR 8292 arrives in Cambridge at 14:54 on Wednesday. It costs 37.80 pounds. How many tickets can I book for you? Sentence7: No, that's all for today. Goodbye! Sentence8: As long as i arrive close to 16:00 I am good. Sentence9: There are trains arriving in Cambridge 6 minutes before the hour throughout the day. Which time would be best for you? Sentence10: Where are you departing from? Sentence11: What will be your destination? Sentence12: I'm going to need a train on Wednesday. I need to arrive by 16:00. Question: Who has spoken the sentence 3? (A) User (B) System
Output: 


Answer: (B) System