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: Hi. 
 agent: Hello, how may I aid you? 
 customer: I am Stephen Young. I am planning to visit some new places at Orlando, help me in booking my flight ticket with one halt. 
 agent: Sure, can you please share your travelling dates? 
 customer: My travelling dates will be 12/26 to 12/28. 
 agent: May I know your airport codes? 
 customer: I would like to start my journey from TX-DFW. My landing airport will be FL-MCO. 
 agent: Thanks for providing your details. Unfortunately there are no flights found with your requirements. 
 customer: Its ok, thank you for your assistance. 
 agent: Thank you for choosing us.
no_flight

customer: Hello. 
 agent: Hello, how may I aid you? 
 customer: Can you assist me in booking my flight ticket from DTW to MCO? 
 agent: Sure, when are you planning to travel? 
 customer: My trip dates will be Nov 7th to Nov 9th. 
 agent: May I know your name please? 
 customer: I am Jonathan Lewis. 
 agent: Do you have any preferences? 
 customer: My depart time should be in the evening. 
 agent: Sorry, no flights found in your desired routes. 
 customer: Its ok, thank you. 
 agent: Thank you for reaching us.
no_flight

customer: Hello. 
 agent: Hello, how can I assist you today? 
 customer: Myself Anna Harris. I need to reach Charlotte to attend a business meeting so please help me with flight ticket booking. 
 agent: Sure, kindly mention your trip dates please? 
 customer: Sure, I need to travel on dates of 05/26 and 05/28. 
 agent: Let me know your airport codes? 
 customer: Sure, I would like to travel from ATL to CLT. 
 agent: Ok,wait for some time. 
 customer: Sure, take your time. 
 agent: Unfortunately there is no flights found on your details. Thanks for connecting us. 
 customer: It's ok fine, thank you for your time.
no_flight