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: Hi, I am Scott Thomas. 
 agent: Hello, what kind of service you are expecting from our side? 
 customer: As I am a doctor I need to fly with the direct flight to Washington to treat an emergency case, can you help me with the booking? 
 agent: Sure, please assign me your boarding and landing airport codes? 
 customer: I would like to start from Atlanta, GA-ATL to reach Washington DC-IAD. 
 agent: Can you please let me know your travelling dates? 
 customer: I intend to start on 08/31 and my return date will be on 09/02. 
 agent: Ok, please wait for a while. 
 customer: Ok. 
 agent: Thanks for your time, there is no direct flight found on your schedule dates. 
 customer: Ok, not an issue. Thanks for your information. 
 agent: Thanks for reaching us, have a nice day.
Solution:
no_flight