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
Input: customer: Hi. 
 agent: Hello. 
 customer: I am Jessica Lewis. 
 agent: How may I help you? 
 customer: Can you help me in booking from MCO to ATL, as there is a business meeting? 
 agent: Jessica Lewis, may I know your travelling dates please? 
 customer: My trip dates are 02/23 to 02/25. 
 agent: Ok, please wait for a moment. 
 customer: Sure. 
 agent: Sorry to inform you, there are no flights available on your request. 
 customer: No issue, thank you for checking. 
 agent: Have a great day ahead.
Output:
no_flight