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. 
 agent: Hello. How can I help you? 
 customer: I am James Phillips, want to travel from ATL to JFK. Please help me. 
 agent: Sure, I will help you. 
 customer: Thank you. 
 agent: Could you please share your depart and arrival dates? 
 customer: My travel dates are from 06/08 to 06/10. 
 agent: May I know your connection limit? 
 customer: No, I don't have any other requirement. 
 agent: Ok, please wait a minute. 
 customer: Ok. 
 agent: Thank you for waiting, there is a flight available with fare 700 in business class having single connection. Shall  I reserve your ticket in Hawaiian airline? 
 customer:  You have any discount on fare because m,y budget limit is 200. 
 agent: Sorry, we can not provide any discount on your ticket fare. 
 customer: Ok. Then, please don't proceed with the booking. 
 agent: Ok. Thank you for approaching us. 
 customer: Most welcome.
Output:
no_flight