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: Can you suggest one? Sentence2: There are many trains which depart daily from Cambridge-what is the destination to which you will be traveling? Sentence3: train ID TR3262 leaves at 19:29 and arrives at 20:07. will that suit you? Sentence4: Reference number is : E0BD9V4Y . Is there anything else? Sentence5: that is fine. book for 7 people please Sentence6: A guesthouse please. I'd like wifi also. Sentence7: I'm looking for a hotel in the east, and it doesn't need to include internet. Sentence8: your all set reference is IPFTBLLM, the cost is 70.7 payable at the station, anything else? Sentence9: Please book for 7 people, 4 nights and starting on Saturday. Sentence10: Okay. I have several in different price ranges. Would you like me to recommend one to you? Sentence11: I'm headed to Bishops Stortford. I'd like to leave Cambridge after 9:45. Sentence12: No, that's all the info I need. Can you book some rooms for me? Sentence13: I'm also looking for a train. The train should leave on wednesday and should depart from cambridge. Sentence14: I have several available. Do you want a hotel or guesthouse? Sentence15: Yes, I recommend the Autumn House. It is cheap and it has 4 stars. Would you like their information? Sentence16: It doesn't matter Sentence17: Of course I can help! What day do you want to check in? Sentence18: Thank you for contacting us have a great day. Sentence19: no that will be all thanks for everything, you have been great! Sentence20: I can help with that! How much money are you looking to spend? Question: Who has spoken the sentence 18? (A) User (B) System
Output: 


Answer: (A) User