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

Example Input: customer: Hi. I am Susan Moore. 
 agent: Hello, how may I render you today? 
 customer:  I want to book a connecting flight ticket to meet my grandparents at Detroit. Can you help me to book a flight ticket? 
 agent: Sure, we are here to help you. Can you please provide your take off and landing airport codes? 
 customer: Yes, my take off airport code is Boston, MA-BOS and landing point is MI-DTW. 
 agent: On which dates would you like me to book a flight ticket for you? 
 customer: I want a ticket on dates 07/27 and 07/29. 
 agent: Ok, please wait for a minute. 
 customer: Ok. 
 agent: Sorry to inform you, currently no flights are running at that locations due to abnormal weather conditions. 
 customer: That's ok. Thank you for the information. 
 agent: Thank you for opting us.
Example Output: no_flight

Example Input: customer: Hello. 
 agent: Hello, how can I support you today? 
 customer: I am Kimberly Green. I want to book a flight ticket from IAH to IAD. Can you find a flight ticket for me? 
 agent: Sure, we are here to make a reservation for you. Please share your planned journey dates. 
 customer: Thank you, my itinerary dates are on 11/13 and return on 11/15. 
 agent: Ok, Is there any halt? 
 customer: Yes, I need one connecting flight. 
 agent: Ok, please wait. 
 customer: Ok, take your time. 
 agent: Thanks for your time, there were no flights found based on your requested dates. 
 customer: It's ok, not a problem with that. Anyways thank you for your help. 
 agent: Thank you for availing us.
Example Output: no_flight

Example Input: customer: Hello, I am Emma Mitchell. 
 agent: Hello, how may I assist you? 
 customer: Can you make a reservation from HOU to MSP? 
 agent: Sure, may I know your travel dates please? 
 customer: I am planning to start on 05/09 and return back on 05/11. 
 agent: Ok, hold on for a moment. Let me check the best flight for you. 
 customer: Make sure that connection limit is 1. 
 agent: Sorry Emma, there are no flights available on your requested dates. 
 customer: Yes, you can go ahead. No issues. THank you for checking. 
 agent: Welcome, thank you for choosing us. Have a great day,. 
 customer: You are welcome.
Example Output:
no_flight