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

[Q]: customer: Hello, I am Kathleen Campbell. 
 agent: Hello, how can I help you today? 
 customer: I want to book a ticket from HOU to DFW to surprise my friend on her birthday. Can you please help me to book a ticket on 06/28? 
 agent: Sure, we are here to help you. May I know the return date of your journey? 
 customer: My return journey date is 06/30. 
 agent: May I know is there any connection limit? 
 customer: I need only one connection limit. 
 agent: Ok, please wait for a while. 
 customer: Ok. 
 agent: Thanks for waiting. Sorry for the inconvenience, we have a direct flight with AA airline. 
 customer: Ok, Do not proceed for booking. 
 agent: Ok. 
 customer: Thanks for your assistance. 
 agent: Thanks for choosing us.
[A]: no_flight


[Q]: customer: Hello. 
 agent: Hello. How may I aid you? 
 customer: Can you please help me in booking a flight ticket from Orlando, MCO to Houston, HOU? 
 agent: May I know on which dates you are willing to travel? 
 customer: My journey dates are from Oct 31 to Nov 02. 
 agent: Do you have any other requirements? 
 customer: I prefer only economy class flight. 
 agent: May I know your name? 
 customer: My name is Nancy Davis. 
 agent: Sorry to inform you that unfortunately there is no flights available by the given details. 
 customer: Ok, that's not a problem. Thanks for your information. 
 agent: Thank you.
[A]: no_flight


[Q]: customer: Hi. 
 agent: Hello. How can I aid you? 
 customer: I am Anna Robinson, can you help em to book a flight from PHL? 
 agent: Sure, may I know your planned travel dates to check for the flight availability? 
 customer: I am planning to fly on Nov 17 and Nov 19. 
 agent: May I know your destination airport code? 
 customer: My preferred destination airport code is IAD. 
 agent: Do you have any specifications? 
 customer: I need a connecting flight. 
 agent: Here, I found a flight with 1 connection as per your request and airfare is about 100. Shall I proceed in booking? 
 customer: Proceed with booking. 
 agent: In an economy class, your ticket has been confirmed for the flight 1027 in AA airlines. 
 customer: Thank you. 
 agent: Thank you for reaching us.
[A]:
book