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, how may I aid you today? 
 customer: I need a flight to Charlotte on 11/12 to attend the party with my friends at the beach. So, please book a flight from Minneapolis, MSP. 
 agent: Sure, when would you like to return on? 
 customer: I planned to return on 11/14. 
 agent: Ok, can I know your destination airport code? 
 customer: Charlotte, CLT. 
 agent: Do you need halt in between the journey? 
 customer: Yes. 
 agent: May I know your good name please? 
 customer: I am Emma Jones. 
 agent: We found a direct flight, are you comfortable. 
 customer: No. Do not proceed. Thank you. 
 agent: Ok, thank you for reaching us.
Output:
no_flight