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 can I assist you today? 
 customer: I want a direct flight from Orlando to Phoenix. 
 agent: Sure, can you please share your travel dates? 
 customer: My journey dates are 09/11 and 09/13. 
 agent: Could you please help me with airport codes? 
 customer: My airport codes are MCO and PHX. 
 agent: May I know your name to proceed further? 
 customer: Donald Roberts here. 
 agent: Donald, there is no flight available at your requested dates. 
 customer: It's ok, thank you for your help. 
 agent: Thank you for contacting us.
Solution:
no_flight