Definition: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Input: Sentence1: There is a train leaving at 11:21 would you like me to book this? Sentence2: excellent, have a great day! Sentence3: I would like to go to Stevenage and leave after 11:00. Sentence4: My pleasure. What is your destination and do you have any time constraints? Sentence5: Please do. I need 8 tickets Sentence6: Yes, the area of the city and the address. Sentence7: Huntingdon Marriott Hotel is in the West and the address is kingfisher way, hinchinbrook business park, huntingdon. Sentence8: Yes, its a four star that is a little pricey. Would you like the phone number or address? Sentence9: I've made those reservations and your reference number is W29ZP27K . Sentence10: Can I be of further assistance today? Sentence11: Can you help me find information about a hotel called huntingdon marriott hotel? Sentence12: That was all that I needed today thanks Sentence13: thank you for all of your help Sentence14: Thanks. I also need a train departing from cambridge on thursday. Question: Who has spoken the sentence 9? (A) User (B) System
Output:
Answer: (B) System