You will be given a definition of a task first, then some input of the task.
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

customer: Hello. I am Daniel Nelson. 
 agent: Hello, how can I assist you? 
 customer: I am planning to visit NASCAR hall of fame museum at Charlotte, can you please help me in reserving a flight ticket? 
 agent: Sure, let me know your travelling dates? 
 customer: My journey dates are on 11/01 and 11/03. 
 agent: Could you please share your airport codes? 
 customer: I want to board at LGA and land at CLT. 
 agent: Please provide your specifications. 
 customer: I need a connecting flight. 
 agent: Hawaiian airlines with single connection and price is 100 of 1002 flight. Shall I proceed? 
 customer: You can proceed. 
 agent: Your ticket has been confirmed. 
 customer: Thank you. 
 agent: Thank you.
Output:
book