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 help you now? 
 customer: I am Carol Baker. 
 agent: Ok. 
 customer: Can you help me to book a flight from IAD to ATL? 
 agent: Sure, can you please mention the travelling dates of your journey? 
 customer: My trip dates are 04/15 and 04/17. 
 agent: Ok, please wait for a while. 
 customer: Sure. 
 agent: Sorry Carol, there are no flights found on your requested dates. 
 customer: Oh! ok. 
 agent: Thank you for approaching us, have a nice day. 
 customer: Thank you for your time. 
 agent: You are welcome.
no_flight

customer: Hi. I am Edward Walker. 
 agent: Hello, Please inform me, How may I assist you the day? 
 customer: Prepone plan came into a picture owing to announcement of birth of baby boy.So I need to cancel my recent reservation. Can you please help me in cancellation? 
 agent: Sure, I can help you in that cancellation. 
 customer: Thank you. 
 agent: Please allow me a moment to check for the previous reservation in our data base. 
 customer: Sure. 
 agent: We are sorry to inform that, there is no active reservation found on your name. 
 customer: Ok, no issues. Thank you. 
 agent: Thanks for choosing us. wish you a nice day.
no_reservation

customer: Hello. I am Laura Garcia. 
 agent: Hello. How can I assist you today? 
 customer: I want to travel from MSP to PHX. Can you help me to book a flight ticket? 
 agent: Sure, I am gleeful to help you. May I know your travel dates please? 
 customer: I want to travel on 01/06 and 01/08. 
 agent: Ok, please wait for a while. 
 customer: Ok, take your time. 
 agent: Thank you for waiting. Here, there is a connecting flight available and airfare is about 200. Shall I proceed? 
 customer: Proceed to booking. 
 agent: Your ticket has been booked for the flight 1019 in Delta airlines. 
 customer: Thank you for your help. 
 agent: Thank you for opting our agency.
book