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: TR5713 leaves at 15:50 and arrives by 16:07. Will that work for you? Sentence2: I have booked your request, your confirmation number is NWPEWP4X . Sentence3: Yes that will work thank you. Sentence4: Yes, I need to leave after 15:45. Sentence5: Sounds great, and how many nights would you like to stay? Sentence6: There are 10 trains leaving from Cambridge to Ely. Is there a particular departure or arrival time you would prefer? Sentence7: That one sounds fine. I need lodgings beginning Thursday. Sentence8: I'd like 3 nights for 6 people, please. Sentence9: Hope you enjoy your trip! Thanks for allowing us to assist you. Sentence10: How many tickets would you like me to book for train TR5713? Sentence11: Wonderful. Thank you very much! That's everything I needed. Sentence12: The acorn guest house is available in your selected region. It's moderately priced and includes free internet and parking. Sentence13: I am also looking for a hotel in the north please. Sentence14: I'm looking to book a train that goes to ely and leaves on sunday please. Sentence15: Booking was successful for TR5713, the total fee is 10.56 GBP payable at the station. Your reference number is : GGE66KI2 . Is there anything else I can help you with? Sentence16: I need 2 adult and 1 child. Thank you. Question: Who has spoken the sentence 2? (A) User (B) System
Output: 


Answer: (A) User