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: TR1765 leaves at 17:01. Would you like for me to book it? Sentence2: I need seats for five people. Sentence3: Booking was successful. The table will be reserved for 15 minutes.Reference number is : 6KNJSQXY . Sentence4: Yes modern european food. Sentence5: Perfect, that's all I need today. Have a great day. Sentence6: I need to leave after 17:00 on Thursday. Sentence7: No preference. Just book a table for 5 on Thursday at 20:15 Sentence8: Sure, how many seats do you need? Sentence9: Yes yur booking is successful and your reference number is RI4VVZYC . Sentence10: Enjoy your dinner. Sentence11: Thanks! I need the reference number please. Sentence12: I would prefer it in the centre area. Sentence13: Do you have a preference in food type? Sentence14: I am looking for a train that will take me to Cambridge from Birmingham New Street. Sentence15: We have two choices, de luca cucina abd bar and roverside brasserie, any preferences? Sentence16: there are so many. what time do you want to leave? Sentence17: Have a nice day. Sentence18: Yes can you please and send me a reference number. Sentence19: There are 31 moderately priced restaurants in town. Do you have a preferred location? Sentence20: Thank you for using our services. Have we met all of your needs today? Sentence21: Thanks, I also need a place to dine that is moderately priced. Sentence22: I will go ahead and book that now. Question: Who has spoken the sentence 10? (A) User (B) System
Output: 


Answer: (A) User