Detailed 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
Q: customer: Hello. 
 agent: Hello. How can I assist you today? 
 customer: I am Sarah Robinson. 
 agent: Nice to meet you. 
 customer: I want to go New York next for my film shooting purpose, can you please book a flight ticket from EWR to JFK? 
 agent: Sure, will you mention your travelling dates please? 
 customer: My departure date is 06/17 and please book my return ticket also on 06/19. 
 agent: Please give me a moment. 
 customer: I want a direct flight to New York. 
 agent: Thank you for waiting. There is no flights found under your preferable journey details. 
 customer: Oh! It's ok no problem, I will go with another airline. Thank you for your information. 
 agent: Welcome, have a great day.
A:
no_flight