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

Input: Consider Input: customer: Hi, Donald Scott here. 
 agent: Hello, how can I assist you at this moment? 
 customer: Can you please reserve me a flight ticket from LAX to AUS? 
 agent: Sure, I will help you with this. Can you please provide your journey dates? 
 customer: My travel dates are 06/03 - 06/05. 
 agent: Do you need any halt in this journey? 
 customer: Yes, I need a single connection. 
 agent: Do you have any other specification for this trip? 
 customer: No. 
 agent: Donald Scott, there are no flight services available on this route on your provided dates. 
 customer: No issues, thank you for your information. 
 agent: Thank you for utilising our service.

Output: no_flight


Input: Consider Input: customer: Hi, Dorothy Collins here. 
 agent: Hello, how can I be your helping hand? 
 customer: I would like to visit Puget sound at Seattle, WA - SEA. Can you please book a ticket from AUS? 
 agent: Sure, can I know your travel dates? 
 customer: My trip dates are 11/08 and 11/10. 
 agent: We found a flight on southwest airline, flight number 1011 with the fare of 100. 
 customer: Please book this. 
 agent: Your ticket has been booked. 
 customer: Thank you for assisting me. 
 agent: Thank you for choosing us.

Output: book


Input: Consider Input: customer: Hi. 
 agent: Hello, how can I assist you today? 
 customer: Can you help me to book a direct flight? 
 agent: Sure, On which dates would you like me to book a flight ticket for you? 
 customer: My travelling dates are Jan 26 and 28. 
 agent: On what name, do I need to reserve your ticket? 
 customer: Please book under my name Richard Edwards. 
 agent:  Can you please provide your take off and landing airport codes? 
 customer: My airport codes are LAX and DCA. 
 agent: Do you have any other requirements? 
 customer: No. 
 agent: Sorry to inform you, currently no flights are running at that locations due to abnormal weather conditions. 
 customer: No issues, thank you. 
 agent: Thank you for reaching us.
Output: no_flight