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: Yes please book it for 8 people and provide the reference number. Sentence2: Ok, what day are you traveling? Sentence3: Great, thank you so much! That will be all for today. Sentence4: Yesm there is a train available, the TR7733, and leaves at 17:50. Would you like me to book this? Sentence5: I would be happy to get that information for you. Can I help you find a restaurant or an attraction? Or would you like assistance with accommodations? Sentence6: Tuesday and I need to leave after 16:45 please. Sentence7: Yes, I'm looking for a college to visit in town. Can you give me some info on what's around? Sentence8: The train is booked for 8 people and the reference number is OPGQ4971 . Do you need any other assistance? Sentence9: I am particularly interested in colleges if you would focus on that type of attraction. I would appreciate it. Sentence10: Are there colleges in the centre of town? Sentence11: You are welcome. Please let us know if you need anything else. Have a great day! Sentence12: Yes, there are 13. I personally recommend corpus christi. Entrance costs 2 pounds. The address is king's parade, postcode is cb21rh, and phone number 01223338000. Sentence13: There are 18 colleges in town. Do you have an area preference? Sentence14: I need help booking a train from cambridge to ely. Question: Who has spoken the sentence 13? (A) User (B) System
Output: 


Answer: (B) System