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, I am Angela White. 
 agent: Hello, how can I assist you today? 
 customer: I have a plan to visit Detroit Historical Museum, please book a flight ticket under price 500. 
 agent: Sure, could you please provide me your source and destination codes? 
 customer: I want to fly from LAS to DTW. 
 agent: Please share me your planned travel dates. 
 customer: My travelling dates are from 10/08 to 10/10. 
 agent: Please wait for a moment. 
 customer: Ok. 
 agent: We found a direct airline: Frontier, flight number: 1012 and price is 100. Shall I proceed to booking? 
 customer: I need a connecting flight. Please don't proceed. 
 agent: Ok, Thank you for reaching us. 
 customer: Thanks for the information.
A:
no_flight