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'd like to arrive by 18:30, but I can leave at any time. Sentence2: 10.10 pounds for one ticket Sentence3: Yes your reference number is BEVM8GPA . Sentence4: Ok, great and could you please confirm the departure time for that train? Sentence5: I want to travel on Tuesday. Sentence6: Sounds good enough to me. What is the price of the TR 9892? Sentence7: I would like to book this hotel for 4 people and 2 nights for Tuesday. Sentence8: The TR9892 leaves Stansted Airport at 5:24 and arrives in Cambridge at 5:52. The TR0135 would also work, it leaves at 14:24 and arrives in Cambridge at 14:52. Sentence9: I have 13 trains. The TR9892 leaves at 5:24, would that work? Sentence10: Thank you. I will also need a train to cambridge. Sentence11: I will be coming in from Stansted Airport heading into Cambridge. Sentence12: Ok, I've booked the cityroomz hotel for your party of 4, for two nights starting Tuesday. Sentence13: Can I have the reference number please. Sentence14: Thank you for using our service. Hope you have a great day. Sentence15: Okay great. Thank you! Sentence16: What day would you like to travel? Sentence17: Where will you be leaving from? Sentence18: Cityroomz is a 0-star, moderately-priced hotel in the center of town. They offer free internet, but no parking. Their address is Sleeperz Hotel, Station Road, cb12tz. Sentence19: Can you get me information on a hotel called cityroomz? Sentence20: Is there anything else that I can help you with? Sentence21: No, you have been a great help. That's it for now. Goodbye. Sentence22: There are 19 trains available that day. Is there a specific time you would like to book? Question: Who has spoken the sentence 9? (A) User (B) System
Output: 


Answer: (B) System