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: Hi,. 
 agent: Hello. How may I assist you? 
 customer: I want to see the art work in DM Weil Gallery at New York, can you please book me a ticket? 
 agent: Sure, I will help you in booking a ticket. 
 customer: Thank you. 
 agent: From where you are planning to take off? 
 customer: I am planning to start my journey from Charlotte, NC-CLT. 
 agent: Could you please share your journey dates? 
 customer: My journey dates are from 10/14 to 10/16. 
 agent: May I know your landing airport code? 
 customer: Landing point airport code is NY-JFK. 
 agent: Thank you for sharing the details, give me a minute to search for available flights on your route. 
 customer: Ok. 
 agent: Thanks for giving your valuable time. There is a connecting flight of UA airline running on your route with fare 300 having 1019 as flight number. Do you want me to confirm this flight for your journey? 
 customer: Do not confirm. As my budget is only 200. 
 agent: Ok, please provide your name for documentation purpose. 
 customer: Myself Jeffrey Wright. 
 agent: Thank you for approaching us. 
 customer: Thank you.
Output:
no_reservation