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

[EX Q]: customer: Hello. 
 agent: Hello, how can I assist you? 
 customer: I need to cancel my ticket due to sudden change in my trip, can you aid me in cancellation process? 
 agent: Sure, I am here to aid you. May I know your name please? 
 customer: Amanda wright. 
 agent: Ok, please wait a minute. 
 customer: Ok. 
 agent: Thank you for waiting, sorry no reservation found on your name. 
 customer: No problem, thank you for searching. 
 agent: Thank you for reaching us, have a nice day.
[EX A]: no_reservation

[EX Q]: customer: Hello. 
 agent: Hello. 
 customer: I am Steven Roberts. 
 agent: How may I help you? 
 customer: Can you please help me in booking a flight ticket from DCA to IAD? 
 agent: Sure, I will help you in booking the ticket. May I know your travelling dates please? 
 customer: My travelling dates are Jan 18th and Jan 20th. 
 agent: Do you have any other specifications? 
 customer: The depart time should be morning. 
 agent: Sorry for this inconvenience, I could not find any flight with your requirements. 
 customer: Ok, not an issue. Thank you. 
 agent: Thank you for reaching us.
[EX A]: no_flight

[EX Q]: customer: Hi,. 
 agent: Hello, How may I help you? 
 customer: I want to book a flight ticket with the name Mark Walker. 
 agent: Sure, Please help me with your journey details? 
 customer: I have planned to travel from Las Vegas, NV- LAS to Oakland, CA- OAK . Also my depart date is on 30th June  and return date is on  2nd July. 
 agent: OK, Do you have any other specifications? 
 customer: I don't have a connection limit but I have a price limit of 1000 and Airline preference as normal-cost. 
 agent: OK, Please wait I will revert you back in a while. 
 customer: OK, Sure. 
 agent: May I know your name? 
 customer: I have already mentioned my name. 
 agent: Sorry for the inconvinience. Thank you for being patience. Sorry, They were no flights available as per your requirement. 
 customer: OK, Thank you for your service.
[EX A]:
no_flight