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: Hello. 
 agent: Hello, how can I guide you for today? 
 customer: I would like to book a flight ticket from IAH to HOU for attending a event. 
 agent: Can you please share on what dates you are willing to travel? 
 customer: My travelling dates are Feb 21 and  Feb 23. 
 agent: Are you looking for a connecting flight or direct flight? 
 customer: I prefer to travel in a connecting flight. 
 agent: Do you have any other requirements that you are looking for? 
 customer: I do not have any other requirements. 
 agent: Can you please provide your name to proceed further? 
 customer: I am Gary Taylor. 
 agent: There is a connecting flight with ticket fare 200 in JetBlue airlines in economy class. Is it ok for you? 
 customer: You can proceed with booking. 
 agent: Your booking is confirmed with flight number 1005. Depart time is 20:00 hours and arrival time is 14:00 hours. 
 customer: Thank you for your help. 
 agent: Thank you for contacting us, have a nice day.
Output:
book