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. 
 customer: My name is Michelle Garcia. 
 agent: How may I help you? 
 customer: I would like to travel from CLT to DFW, could you help me out? 
 agent: Sure, please share your travel date. 
 customer: My preferable dates are from 08/10 to 08/12. 
 agent: Sorry, there are flights available for the given schedule. 
 customer: That's ok. 
 agent: Thank you for reaching us. 
 customer: Thank you for your time.
[EX A]: no_flight

[EX Q]: customer: Hello. 
 agent: Hello, how may I assist you? 
 customer: I am Edward Hernandez, I am willing to have a trip in the month of December in Orlando city for two days. Can you help me with my flight ticket booking from Boston? 
 agent: Sure, may I know your planned travel dates please? 
 customer: Thank you for reacting positively, my planned travel dates are 12/02 and 12/04. 
 agent: Can you please share your source and destination airport codes? 
 customer: Sure, my nearest airports as my source and destination are BOS and MCO respectively. 
 agent: There is a flight available on your requested dates from Frontier airlines with 1 connecting flight.Shall I confirm your booking? 
 customer: You may confirm my reservation with this flight. 
 agent: Your ticket is booked with flight 1002. 
 customer: Thank you for our quick response. 
 agent: You are welcome.
[EX A]: book

[EX Q]: customer: Hi. 
 agent: Hello, how can I help you today? 
 customer: I am Patrick White. Please book a flight ticket on dates 12/09 and 12/11. 
 agent: Sure, kindly mention your airport codes. 
 customer: My airport codes are NY-LGA and DC-DCA. 
 agent: There is a flight with your requirement, airline is Hawaiian with price 100 and single connection. 
 customer:   Yes, please. Proceed with booking. 
 agent: Your booking is done. 
 customer: Thank you. 
 agent: Thanks for reaching us.
[EX A]:
book