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
Input: customer: Hi. I am Samuel Thomas. 
 agent: Hello, How can I best assist you now? 
 customer: I would like to travel from ORD to IAH for an important meeting, can you please search is there any flight available for me? 
 agent: Sure, please let me know your journey dates for further booking. 
 customer: My trip dates are Jul 25 to Jul 27. 
 agent: Do you like to go with a economy class or business class? 
 customer: I am ok with any class. 
 agent: Do you require any stopovers in your journey? 
 customer: I need a direct flight. 
 agent: Please be on hold for sometime to check the suitable flight for your journey. 
 customer: Sure. 
 agent: We are sorry to say that, there is no direct flight found on your requested dates. 
 customer: No issue, thank you. 
 agent: Thanks for consulting with us.
Output:
no_flight