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: Hi. I am looking for a hotel to stay in. Sentence2: Thanks for serving me! Sentence3: Is there an expensive hotel with 3 stars that is located in the south? Sentence4: Yes, where will you be departing from? Sentence5: I have options available would you like me to book something for you. Sentence6: Do you have a hotel in mind or a price range? Sentence7: Yes. I'm looking for a 3 start hotel Sentence8: Your welcome. Have a great day! Sentence9: Can you locate a train that will take me to the hotel. Sentence10: I'd like to leave after 13:00 on Sunday and I want to go to Kings Lynn. Sentence11: You too much appreciated. Sentence12: Glad to be of service. Goodbye. Sentence13: I just need the train ID, please. Sentence14: Yes, there is the lensfield hotel. Sentence15: I recommend the gonville hotel located in the centre of town. Would you like me to book you a room or do you need anymore information? Sentence16: I was able to book your room per your request. The reference number is : 9RXKQ7C3 . Sentence17: I wanted somewhere expensive :D Sentence18: Sure thing TR7423. Thank you Sentence19: book it for 1 people and 2 nights starting from saturday. Sentence20: there are five expensive hotels in cambridge. Do you have a star preference or area in mind? Sentence21: What is your destination, and what time would you like to leave? Sentence22: The train should depart from cambridge and should leave on sunday. Question: Who has spoken the sentence 12? (A) User (B) System
Output: 


Answer: (A) User