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

[EX Q]: customer: Hi. 
 agent: Hello, how can I guide you today? 
 customer: Can you please help me in reserving a ticket to reach Houston with fare 1000? 
 agent: Sure, I am glad to help you. 
 customer: Thank you. 
 agent: Help me with your airport codes please? 
 customer: My airport codes are from LAS to IAH. 
 agent: On which dates you want me to book a flight ticket for you? 
 customer: Please book a ticket on 01/22 and need to return on 01/24. 
 agent: Thanks for your details, we found a connecting flight with flight number 1019 in Hawaiian airline and fare is of 100. Shall I reserve it? 
 customer: You can reserve it. 
 agent: May I know your good name please? 
 customer: I am Stephen Davis. 
 agent: Your ticket has been confirmed. 
 customer: Thank you for your extendable support. 
 agent: Thank you for choosing us.
[EX A]: book

[EX Q]: customer: Hello. 
 agent: Hello. How can I assist you now? 
 customer: I want to book a ticket from DEN to IAD to attend seminar, can you help me in booking? 
 agent: sure, I am happy to help you with that. Can I have your travel dates please? 
 customer: I am departing on Mar 10 and return on Mar 12. 
 agent: Ok, please let me know the timings of your journey. 
 customer: I do not have any time preferences. 
 agent: Do you prefer any specific class to travel? 
 customer: I do not have any class preference. 
 agent: Are you looking for any connecting flight or direct flight only you want? 
 customer: I prefer a connecting flight. 
 agent: Can I have your good name please? 
 customer: My name is Matthew Campbell. 
 agent: Ok, please wait a moment. 
 customer: Sure. 
 agent: UA airlines running a direct flight in your route which can provide a ticket with fare 200  in economy class. Are you ok with this flight? 
 customer: Please proceed for booking. 
 agent: Ok Matthew Campbell, your ticket booking has done and the flight number is 1001. 
 customer: Thank you for your help. 
 agent: Thank you for choosing us, have a great journey.
[EX A]: book

[EX Q]: customer: Hi. 
 agent: Hello. How may I help you today? 
 customer: Can you please help me in booking flight ticket from BOS to AUS? 
 agent: Sure, I am here to help you. May I know your name please. 
 customer: I am Matthew Roberts . 
 agent: Please mention your journey dates? 
 customer: My travelling dates are 03/20 and 03/22. 
 agent: Ok, please wait a while. 
 customer: Ok, sure. 
 agent: Sorry Roberts, no flights are available on your desired route. 
 customer: Ok, fine thank you for checking. 
 agent: Thank you for reaching us.
[EX A]:
no_flight