Detailed Instructions: 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
Q: customer: Hello. 
 agent: Hello. 
 customer: I am Edward Wright. 
 agent: How can I help you? 
 customer: I want to attend my seminar in FL - MCO,  please help me for booking flight ticket. 
 agent: Sure, could you please give me your source code? 
 customer: My source code NY - JFK. 
 agent: Your preferred journey dates please? 
 customer: My travelling dates from 05/07 to 05/09. Make sure that connection limit is 1 and price limit is 1000. 
 agent: Edward, there is no flight available for your desired details. 
 customer: Ok, thanks for your services.
A:
no_flight