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
Problem:customer: Hello. 
 agent: Hello, how may I help you? 
 customer: Will you please book me a flight ticket from CLT to SEA? 
 agent: Sure, may I know your trip dates please? 
 customer: I will start on May 17th and return on May 19th. 
 agent: Do you have any connection limit? 
 customer: I need a direct flight. 
 agent: Any other requirements to be met? 
 customer: No. 
 agent: Can I know your name please? 
 customer: I am Laura Campbell. 
 agent: Sorry to inform you there is no flight available as per your request. 
 customer: That's alright, thanks for your assistance. 
 agent: My pleasure.
Solution:
no_flight