Definition: 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: Kevin Brown here. 
 agent: How can I support you today? 
 customer: Can you help me in ticket from JFK to MCO? 
 agent: Could you please share your travelling dates? 
 customer: My travelling dates are from 02/10 to 02/12. 
 agent: There were no flights available at this moment which provides services in your route. 
 customer: It's ok. 
 agent: Thank you for contacting us. 
 customer: Thank you.
Output:
no_flight