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 be at your service? 
 customer: I am Anthony Miller and help me to cancel the reservation, as my visa got rejected to go for a holidays vacation. 
 agent: Sure, we are here to assist you. 
 customer: Ok. 
 agent: Please be on hold for a second. 
 customer: Sure. 
 agent: Thanks for holding on, we found a reservation in your name and that has been cancelled successfully. 
 customer: Thank you. 
 agent: Thanks for approaching us, your amount will be credited to your account.
cancel

customer: Hello. 
 agent: Hello. 
 customer: David Evans here. 
 agent: How can I help you at this moment? 
 customer: I would like to visit New York for a business conference, can you please help me out with booking of a flight ticket to go there? 
 agent: Sure, I will help you in booking flight ticket. 
 customer: Thank you. 
 agent: Can you please mention your travel dates for booking flight ticket? 
 customer: Sure, I am planning to go on 10/03 and please book my return ticket on 10/05. 
 agent: May I know your preferable airport code names for further process? 
 customer: Sure, my nearest genesis airport code is SEA and my destination airport code is LGA. 
 agent: Please hold on a moment, I will check flight availability in this route. 
 customer: Ok, take your time but try to bring a best flight in my route. 
 agent: Based on your information, Southwest airline is ready to serve you with 1 connection with a minimum fare of 100 is available for you. Shall I proceed with this? 
 customer: That's fine, you can proceed with booking. 
 agent: Your flight ticket is booked successfully, flight number is 1021. 
 customer: Thank you for your assistance in booking of my ticket. Have a nice day. 
 agent: You are welcome.
book

customer: Hello. 
 agent: Hello, how can I aid you? 
 customer: I want to enjoy beer festival with my friends.So, can you please book a flight to LGA? 
 agent: Sure. Can I know your travelling dates? 
 customer: I want to start on 03/22 and return on 03/24. 
 agent: Can you provide origin point? 
 customer: My origin point is ORD. 
 agent: Do you have any limitations? 
 customer: I need a direct flight. Price limit is 5000. 
 agent: Thanks for the information. We did not found any direct flights matching your criterion. Can you provide your good name? 
 customer: I am Virginia Harris. 
 agent: Thanks for contacting us. 
 customer: Thanks for the information.
no_flight