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 Emma Young. I am planning to book a ticket from CLT to DFW. Can you please help me out? 
 agent: Ok, may I know your travelling dates? 
 customer: I would like to travel on Mar 10 and return back on Mar 12. 
 agent: Here is a connecting flight with flight number 1029 and fare is 100, providing ticket in economy class. Shall I proceed with booking? 
 customer: That's fine, please proceed the booking. 
 agent: Your booking is done in Spirit airlines. 
 customer: Thank you for your service. 
 agent: Thank you for choosing us.
book

customer: Hello, I am William Wright. 
 agent: Hello, how may I oblige you today? 
 customer: Due to sudden changes my meeting has been postponed. I want to later my reservation. Can you please help me with it? 
 agent: Ok, please give me a moment. 
 customer: Ok. 
 agent: Unfortunately, there is no reservation found on your given name. 
 customer: Not an issue, thank you. 
 agent: Thank you.
no_reservation

customer: Hello. 
 agent: Hello, how may I help you? 
 customer: I need to travel from HOU to AUS, can you help me? 
 agent: On which dates would you like me to book a flight ticket for you? 
 customer: My journey dates are Feb 15 to 17. 
 agent: Do you have any connection limit? 
 customer: I prefer to travel in a connecting flight. 
 agent: Please let me know if you have any other specifications. 
 customer: I want to depart in morning time. 
 agent: Can I know your good name? 
 customer: I am Emma Hall. 
 agent: Sorry, no flights are available in this route as per your requested dates. 
 customer: Ok, no issues. Thank you for the information. 
 agent: Thank you for reaching us.
no_flight