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: Hello. 
 agent: Hello. 
 customer: I am Donna Hernandez. 
 agent: How may I assist you? 
 customer: I need a direct flight for my journey to attend an important meeting, can you please hep me in flight ticket booking from ORD to JFK? 
 agent: Sure, I will help you in flight ticket booking. 
 customer: Thank you and my travel dates are 03/07 and I will catch the return flight on 03/09. 
 agent: Ok, wait for a moment please. While I am checking for the flights available. 
 customer: Sure, I will wait for your response. 
 agent: Thanks for waiting. I have found Delta airlines which flies with one connection. 
 customer: Yes, please proceed with flight ticket booking. 
 agent: Yes, I have confirmed your flight ticket with flight number 1012. 
 customer: Thank you for your help in my flight ticket booking. 
 agent: Thank you. 
 customer: Welcome.
book

customer: Hello. 
 agent: Hello. How can I help you? 
 customer: I want to celebrate my mother birthday, I would like to book a ticket. 
 agent: May I know the journey details? 
 customer: My source airport code is EWR and my destination airport code is LGA. 
 agent: Help me with the dates. 
 customer: My prefer dates are from 07/24 to 07/26. 
 agent: May I know the name? 
 customer: My name is Amanda Scott. 
 agent: Sorry, no flight found. 
 customer: Ok, no issue. 
 agent: Thank you. 
 customer: Thank you for your information.
no_flight

customer: Hi. Nancy Perez here. 
 agent: Hello, how can I assist you now? 
 customer: I am planning to visit Boston university to collect my graduation certificate. I will fly from LAX - BOS. 
 agent: Ok, may I know the travelling dates please? 
 customer: I will be travelling from 03/30 and end my journey on 04/01. 
 agent: Please wait for a while, I will check the details and get back to you. 
 customer: Ok. 
 agent: Sorry, there are no flights found on your requested dates. 
 customer: Not a problem. 
 agent: Do you have any other dates to travel? 
 customer: It is ok. Thank you. 
 agent: Thank you for approaching us, have a nice day.
no_flight