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 may I aid you? 
 customer: I planned to meet my friend in HOU, can you please help me to book a flight ticket from DCA? 
 agent: Sure, let me know your trip dates please? 
 customer: I prefer to travel on Dec 28 and Dec 30. 
 agent: May I know your connection limit? 
 customer: I prefer to travel in a connecting flight. 
 agent: Do you need any other preference? 
 customer: No. 
 agent: Can I know your name please? 
 customer: I am Amanda Martin. 
 agent: Frontier Airlines is providing connecting flight with the ticket fare of 100 and depart time is 4:00 hours, arrival time is 6:00 hours. Shall I proceed? 
 customer: Ok, please confirm my booking. 
 agent: Your ticket has been confirmed by flight number 1005 and an economy class. 
 customer: Thank you for your help. 
 agent: thanks for choosing us.
[EX A]: book

[EX Q]: customer: Hello. 
 agent: Hello, how may I assist you today? 
 customer: I am David Adams. Can you help me to book a flight ticket from CLT to LGA? 
 agent: Sure, can you confirm your travel dates? 
 customer: My travelling dates are 23 and 25 of June. 
 agent: Do you have any another specifications? 
 customer: I need a connecting flight. 
 agent: United Airlines providing the ticket for you, the fare is 100 and connection limit 1. Would you like me to make the booking now? 
 customer: Please proceed to booking. 
 agent: Your ticket reservation done with the flight number 1010. 
 customer: Thanks for helping me. 
 agent: Welcome, have a great journey.
[EX A]: book

[EX Q]: customer: Hello. Frank Edwards here. 
 agent: Hello Frank, how may I aid you? 
 customer: Due to an emergency, I want to cancel my reservation. Can you please help me for that? 
 agent: Sure, wait a moment to check your previous reservation status. 
 customer: Ok. 
 agent: Sorry Frank, we don't found any reservation under your name. Would you like to ask us anything else? 
 customer: Nothing, thank you for the information. 
 agent: Ok, thank you for reaching us, have a nice day.
[EX A]:
no_reservation