Q: 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
customer: Hello. 
 agent: Hello, how may I aid you today from my end? 
 customer: I am Michel Campbell. I want to meet my grand parents who are staying in JFK. Can you please help me to book a flight from DEN? 
 agent: Sure, I am here to help you out. Please provide me your trip dates. 
 customer: Sure, I want to travel on July 11 and need to return on July 13. 
 agent: Michel Campbell, do you have any requirement? 
 customer: Yes, I need a direct flight. 
 agent: Sorry Michel Campbell, there is no direct flight in your route. 
 customer: Ok, no issues. Thank you for checking. 
 agent: Ok, thank you for reaching us.
A:
no_flight