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

Example Input: customer: Hello. 
 agent: Hello, how can I guide you for today? 
 customer: Can you help me to book a business class flight ticket? 
 agent: Can you please share on what dates you are willing to travel? 
 customer: My travel dates are May 05 and May 07. 
 agent: Can you please provide your source and destination airport codes? 
 customer: My airport codes are DEN and MSP. 
 agent: Do you have any airline preferences? 
 customer: I am comfortable with any airlines. 
 agent: Are you looking for a connecting flight or direct flight? 
 customer: I am looking for connecting flight. 
 agent: Do you have any other requirements that you are looking for? 
 customer: No, thanks for asking. 
 agent: Can you please provide your name to proceed further? 
 customer: My name is Thomas Scott. 
 agent: Sorry, there are no flights available at your request. 
 customer: No problem, thank you for the information. 
 agent: Thank you for contacting us, have a nice day.
Example Output: no_flight

Example Input: 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.
Example Output: cancel

Example Input: customer: Hello, I am Kathleen Campbell. 
 agent: Hello, how can I help you today? 
 customer: I want to book a ticket from HOU to DFW to surprise my friend on her birthday. Can you please help me to book a ticket on 06/28? 
 agent: Sure, we are here to help you. May I know the return date of your journey? 
 customer: My return journey date is 06/30. 
 agent: May I know is there any connection limit? 
 customer: I need only one connection limit. 
 agent: Ok, please wait for a while. 
 customer: Ok. 
 agent: Thanks for waiting. Sorry for the inconvenience, we have a direct flight with AA airline. 
 customer: Ok, Do not proceed for booking. 
 agent: Ok. 
 customer: Thanks for your assistance. 
 agent: Thanks for choosing us.
Example Output:
no_flight