Definition: 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 assist you for today? 
 customer: Please help me to book a flight ticket from AUS to HOU. 
 agent: I am happy to help you in booking your flight ticket. Can you please let me know your scheduled dates of journey? 
 customer: My journey dates are from Mar, 30 to Apr, 01. 
 agent: Do you need any connecting flight for your journey? 
 customer: I need a single connecting flight. 
 agent: Can you please let me know your name for further purpose? 
 customer: Sandra Hill. 
 agent: Do you need any other specifications for this trip? 
 customer: No. 
 agent: As per your requirements, I have found a connecting flight to your region on your planned dates of journey which departures in the afternoon having a ticket fare of 100 by Spirit airlines. Shall I proceed with the booking? 
 customer: Please proceed. 
 agent: I have reserved your flight ticket with the flight 1027 with an economy class. 
 customer: Thank you for booking. 
 agent: You are welcome, thank you for employing our service. Have a safe journey.
Output:
book