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, I am Pamela Miller. 
 agent: Hello, how can I assist you today? 
 customer: I want to travel from New York, EWR to attend for my sister's marriage anniversary. Will you please aid me in booking a ticket under the price range of 500? 
 agent: Sure, I will help you. May I know your destination airport code? 
 customer: My destination point is Orlando, MCO. 
 agent: Can I have your trip dates? 
 customer: My journey dates are from 06/02 to 06/04. 
 agent: Please wait for a while. 
 customer: Sure, take your time. 
 agent: Thanks for waiting. Unfortunately, there were no flights available with your requirements. 
 customer: That's ok, I will check for another option. Thank you for the response. 
 agent: Thank you for contacting us.
Output:
no_flight