Teacher:In this task, you are given a conversation between a flight agent and the customer. You are given 4 options and you need to select the goal of the conversation. It is provided as part of customer's context, which has to be one of the following: `book`: Make a new reservation, `cancel`: Cancel an existing reservation, `no_flight`: No flight found for the customer's preference, `no_reservation`: No reservation / No change / No cancellation was made in the conversation, mostly enquiring details
Teacher: Now, understand the problem? Solve this instance: customer: Hello. 
 agent: Hello, how may I help you? 
 customer: I'm Nicole Jackson. I want to fly from IAH to PHX. Can you book a ticket for me? 
 agent: Sure, can I know your dates of journey? 
 customer: I want to travel on 09/09 and 09/11. The connection limit should be 1. 
 agent: Flight-1012 with Delta airlines is available, shall I proceed for booking? 
 customer: Yes, book the ticket on my name. 
 agent: Your ticket was confirmed Nicole Jackson. 
 customer: Thank you for your help. 
 agent: Thanks for choosing us.Have a nice day.
Student:
book