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'm looking for a train that goes to Cambridge and it should leave on Wednesday and arrrive by 10:15. Sentence2: Where are you going to depart from? Sentence3: The travel time is 163 minutes. Shall I book the tickets? Sentence4: I'll be traveling to Birmingham New Street. Could you give me the travel time for that train? Sentence5: No. I am also looking for attractions, a swiming pool in the south. Sentence6: There are 49 trains, where would you like to leave from? Sentence7: What is their address? Sentence8: There are four trains that meet your request, would you like me to book one for you? Sentence9: The Junction is a theatre in the south. Their phone number is 01223511511. Sentence10: No, why don't you try a theatre, instead. Sentence11: I am departing from Cambridge Sentence12: I am departing from cambridge. Sentence13: Yes, please, what is the travel time? Sentence14: The junction is located on Clifton Way, Their phone number is 01223511511 if you need more precise directions. Sentence15: Thank you for your assistance today. Have a great day! Sentence16: There are no swimming pools in the north. Would you like one in the centre instead? Sentence17: Ok great, I have 52 trains departing from cambridge. Where will you be traveling to? Sentence18: You're welcome! Please contact us again if you need any additional assistance. Have a great day! Question: Who has spoken the sentence 1? (A) User (B) System
Output: 


Answer: (B) System