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, myself Kathleen Brown. 
 agent: Hello, how can I best assist you now? 
 customer: I want to book a flight ticket to visit Rocky Steps in Philadelphia, PA - PHL. Can you please make a flight reservation under the fare of 500? 
 agent: Sure, I can help you in that. 
 customer: Thank you. 
 agent: May I know your journey dates to travel? 
 customer: I want to travel on 01/31 and need to catch return flight on 02/02. 
 agent: Please share me your boarding airport code? 
 customer: My origin airport code is Orlando, FL - MCO. 
 agent: Do you need any lay by in between journey? 
 customer: Yes, I need a connecting flight. 
 agent: Thanks for your details, there is a flight available in Delta airline of flight number 1013 and fare is 200. Shall I proceed for booking with connecting flight? 
 customer: Please proceed with the booking. 
 agent: Your ticket has been reserved. 
 customer: Thanks for your assistance. 
 agent: Thanks for choosing us, wish you a good journey in Delta airlines.
book

customer: Hello. 
 agent: Hello, how may I help you? 
 customer: I am George Hall, want to travel from IAH to SFO>. 
 agent: May I know your trip dates? 
 customer: My travel dates are from 06/05 to 06/07. Please check the flight with 1 connection. 
 agent: There is no reservation found under your name. 
 customer: It's ok, thank you. 
 agent: Most welcome.
no_flight

customer: Hello. 
 agent: Hello. 
 customer: Rachel Martin here. 
 agent: Rachel, how may I guide you? 
 customer: Actually I booked a ticket to MSP for a interview, but due to a medical problem I'm unable to attend. Could you help me in changing my reservation to other planned dates? 
 agent: Hold on for a moment, let me check. 
 customer: Ok. 
 agent: Rachel, I am sorry to inform you that there are no existing reservations with your name. 
 customer: No problem. Thank you for your time. 
 agent: Thank you, have a good day.
no_reservation