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 Joseph Perez. 
 agent: Hello, how may I help you today? 
 customer: I would like to book a ticket from JFK to DCA, can you please help me out? 
 agent: Sure Perez, can you please share me with your dates of journey? 
 customer: I am travelling on these dates 12/30 and 01/01. 
 agent: Please wait for a moment. 
 customer: Sure. 
 agent: There is a flight with the connecting flight of fare 100 and the airline is naming as Spirit, are you ok with this booking? Your ticket has been reserved with the flight number 1003, thank you.
Output:
book