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

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.
no_flight

customer: Hi. Sharon Brown here...... 
 agent: Hello, do you need any help from us? 
 customer: Please help me out in booking the ticket from IAD to PHL. 
 agent: Sure, could you please share your departure and arrival day? 
 customer: My trip dates will be May 16 to May 18. 
 agent: The economy class with flight number 1018 of Frontier airline is available having fare as 100 and connection as 0, is it ok for you? 
 customer: Can you please tell me return time? 
 agent: Ok, the return time is in morning. 
 customer: Please proceed. 
 agent: Ok, your reservation is confirmed. 
 customer: Thank you. 
 agent: You are welcome, have a great day.
book

customer: Hi. 
 agent: Hello. How may I help you? 
 customer: Can you please help me in booking my flight ticket from SFO to DCA? 
 agent: Sure, could you please share your journey dates? 
 customer: My travelling dates are 05/28 and 05/30. 
 agent: Please wait for a moment. 
 customer: Ok, please confirm my flight ticket with name Michael Perez. if any you found. 
 agent: Sorry, no flight is available. 
 customer: Ok, fine thank you for checking. 
 agent: Thank you for reaching us, have a nice day.
no_flight