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 Catherine Edwards. 
 agent: Hello, how may I oblige you today? 
 customer: I want to book a ticket to Los Angeles, CA - LAX to EWR. Can you please help me with booking? 
 agent: Sure, I would be happy to help you. Can you please share me your trip dates? 
 customer: I need to depart on 05/24 and return on 05/26. 
 agent: Let me know, how much you can spend for flight ticket? 
 customer: As my budget is low I can pay 200 only. 
 agent: Sorry to inform, there is no flight found on your provided information. 
 customer: Ok no problem. 
 agent: Thank you for connecting with us. 
 customer: Thanks for your kind response.
Output:
no_flight