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 can I assist you? 
 customer: I am Anthony Clark. I want to cancel my reservation. 
 agent: Ok, please wait. 
 customer: Ok. 
 agent: Sorry, reservation found on your name to cancel. 
 customer: That's ok. Thank you. 
 agent: Most welcome.
no_reservation

customer: Hello, I am Betty Campbell. 
 agent:  Hello, How exactly I can serve you the best today? 
 customer: Can you help me to book a direct flight from LGA - OAK? 
 agent: Sure, I will help you with that. 
 customer: Thanks. 
 agent: Kindly, mention your travelling dates? 
 customer: My travelling dates are 07/26 and 07/28. 
 agent:  Ok, please wait a moment, let me search a flight for you. 
 customer: Sure. 
 agent: Sorry to inform you, currently no flights are running at that locations due to abnormal weather conditions. 
 customer: Ok, no issues. Thank you. 
 agent: Thank you for choosing us.
no_flight

customer: Hello. 
 agent: Hello, how may I help you? 
 customer: I would like to travel from ATL to SEA. Can you please help me in ticket booking? 
 agent: Sure, may I know your trip dates please? 
 customer: My trip dates are from 08/27 to 08/29. 
 agent: Ok, do you have any other requirements? 
 customer: I want a direct connecting flight. 
 agent: Can I know your name please? 
 customer: Ok. Myself Nicholas Turner. 
 agent: Sorry, we regret to inform you that there is no flight available as per your request. 
 customer: It's ok, thank you. 
 agent: My pleasure.
no_flight