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 am planning to book a flight ticket to DCA from OAK, can you please help me out? 
 agent: Sure, I can help you with that. May I know your travel dates please? 
 customer: Sure, my planned travelling dates are May 24 and May 26. 
 agent: May I know how many connections are you expecting in between your journey? 
 customer: Sure, I am looking for a flight with 1 connection. 
 agent: Please let me know if you have any other specifications. 
 customer: That's all for now. 
 agent: Can I have your good name please? 
 customer: Sure, my name is Jason Young. 
 agent: JetBlue airlines is providing a flight on that route with ticket fare of 100 and single connection, it will departs at 12:00 hours and arrives at 5:00 hours. Shall I proceed for booking? 
 customer: Ok, please confirm my reservation. 
 agent: I have successfully booked you an economy class ticket in flight-1014, have a safe journey. 
 customer: Thank you for the help. 
 agent: Thank you for choosing us.
[EX A]: book

[EX Q]: customer: Hi. 
 agent: Hello. How may I assist you today? 
 customer: Can you please help me to change my existing reservation? 
 agent: Sure, Can you please mention your name for checking your details. 
 customer: I am Justin Lopez. 
 agent: Please wait a moment. 
 customer: Ok. 
 agent: Sorry, there are no active reservations on your given name to change. 
 customer: Ok, no problem. Thank you. 
 agent: Thank you for reaching our service.
[EX A]: no_reservation

[EX Q]: customer: Hi. 
 agent: Hello. How may I help you? 
 customer: I want to cancel my recent reservation due to sudden cancellation of my trip. Can you help me? 
 agent: May I know your name please to check the status of your reservation? 
 customer: Cynthia Miller here. 
 agent: Thank you. Please stay online for a while, I will check your reservation status and let you know. 
 customer: Ok. 
 agent: I have successfully cancelled your reservation and the amount will be refunded to you within 2 business days. 
 customer: That's Fine, Thank you for the information. 
 agent: Thank you for reaching us.
[EX A]:
cancel