You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.

Ex Input:
Sentence1: I am looking for Mediterranean food in the center of the city. Sentence2: I show 3 available. 2 are in the expensive range and 1 is cheap. May I book a table for you? Sentence3: Thanks for calling. You have a great day! Sentence4: I have booked you at the Shiraz Restaurant for 7 people Saturday at 15:45. Your table will be reserved for 15 minutes. Sentence5: I'd like the expensive range and I'd like to book a table for 7 people on Saturday at 15:45. Sentence6: Great. Thanks so much! Sentence7: Thank you so much. That is all I need today. Have a great evening. Sentence8: Sure. Your reference number is MSV3UPS2 . You will likely need it. Question: Who has spoken the sentence 4? (A) User (B) System

Ex Output:
Answer: (A) User


Ex Input:
Sentence1: It has a 3 star rating. Sentence2: Could you tell me if The Lensfield Hotel has at least a 4 star rating? Sentence3: Find me an expensive place to stay on the south side, please. Sentence4: Yes I would like to make a booking. Sentence5: You're welcome. Have a great day! Sentence6: No, The only hotel I see has a 3 star rating. Sentence7: You know I also need someplace to eat in that is also cheap, and also in the south area. Sentence8: There is only one expensive hotel on the south side. Would you like to book at The Lensfield Hotel? Sentence9: Okay, how many guests and how many nights would you like me to book? Sentence10: How about a hotel in the cheap price range? Sentence11: I would also like a taxi to arrive by my booked time. can i have the taxi contact number and car type Sentence12: Lets go with The Lucky Star. I need a table for 8 people at 13:45 on Friday. Sentence13: Great it's all booked the reference number is MXDZ66IK Sentence14: You have your choice of The Lucky Star, with Chinese cuisine, or Nandos, a portuguese restaurant. Sentence15: Sure, the car will be a blue lexus and the contact number is 07235433780. Anything else I can help you with? Sentence16: I see, are there any cheap 4 star hotels on the south side? Sentence17: Nope, that is all. Thank you very much. Sentence18: Rosa's bed and breakfast is a guesthouse is a 4 star. Question: Who has spoken the sentence 2? (A) User (B) System

Ex Output:
Answer: (A) User


Ex Input:
Sentence1: Yes, there are a number of options. Did you have a particular area of town in mind? Sentence2: I'm leaving Monday from Cambridge and going to Leicester. Sentence3: 11:15 for 4 people,can you book it for me ? Sentence4: Hi. Can you help me find a train that is departing from leicester? Sentence5: Yes the north please. Sentence6: Unfortunately, we don't have any restaurants in the city that offer traditional food. Is there another type of cuisine I can search for? Sentence7: Milton Road Chesterton is the address. 01223568988 is the phone number. Can i help you with anything else today? Sentence8: What time were you wanting to leave around? Sentence9: no. i'm going to head out now. it was great that you could help. goodbye. Sentence10: Booking was successful, the total fee is 151.19 GBP payable at the station . Reference number is : DKHCMYX0 . Sentence11: Ok, well how about Chinese in the expensive range? Sentence12: Okay, I recommend Hakka on Milton Road Chesterton. Sentence13: What is your destination? What day will you be traveling? Sentence14: Ok great. Can I get the address and phone number? Sentence15: Have a lovely day, goodbye! Sentence16: Thank you. Can yo also find a restaurant that serves traditional food and in the expensive price range? Question: Who has spoken the sentence 9? (A) User (B) System

Ex Output:

Answer: (B) System