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
One example: customer: Hi. 
 agent: Hello. How can I help you? 
 customer: I would like to change my existing reservation as my plan to go for a holiday trip got postponed. Can you please help me with this? 
 agent: Sure, may I know your name please? 
 customer: My name is Anthony Phillips. 
 agent: Please wait a moment. 
 customer: Sure. 
 agent: Unfortunately there is no reservation found with your given name. 
 customer: Not a problem, thank you for checking. 
 agent: Thank you for choosing us.
Solution is here: no_reservation
Explanation: Here the customer has not asked for any booking, he just wanted to update his already booked flight, so the status would be no_reservation

Now, solve this: customer: Hello. 
 agent: Hello. How can I help you today? 
 customer: I want the flight with 0 connection limit. Can you please help me out? 
 agent: Sure, I can check that for you. May I know your name to proceed further? 
 customer: Sure, my name is Samuel Baker. 
 agent: Could you please provide the airport codes? 
 customer: The airport codes are from IAD to OAK. 
 agent: Can you please share your preferable travel dates? 
 customer: The travel dates are from 05/23 to 05/25. Make sure that the price should not be more than 5000. 
 agent: Ok, please allow me a moment to check for the availability of flight. 
 customer: Sure, take your time. 
 agent: Your patience is greatly appreciated. Samuel, I am sorry to inform you that there is no flight available at your requested dates. 
 customer: Ok, no problem. I will check another flight to complete by trip. 
 agent: Thank you for contacting us. 
 customer: Thank you for your information. 
 agent: You are welcome.
Solution:
no_flight