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. 
 agent: Hello, how can I be your helping hand today? 
 customer: I am planning for a trip from ATL to DEN, for attending a function in my aunt's home. Can you help me with booking? 
 agent: Sure, we are glad to help you for booking. 
 customer: Thank you. 
 agent: Can you please provide your depart and arrival dates? 
 customer: Ok, my planned dates are from Nov 21 to 23. 
 agent: May I know your connection limit? 
 customer: I need a connecting flight. 
 agent: Do you have any class preference? 
 customer: No. 
 agent: Could you please share your journey timings? 
 customer: I am ok with any time. 
 agent: Let me know your name for booking. 
 customer: Sure, I am Dennis Williams. 
 agent: Ok, please wait for a moment. 
 customer: Get back with good airlines. 
 agent: Sorry for the inconvenience, there were no flights running to that location due to abnormal weather condition. 
 customer: It's ok, thanks for checking. 
 agent: Thank you for approaching us.
Output:
no_flight