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

Q: customer: Hello, Stephanie Carter here. 
 agent: Hello Stephanie, how may I assist you? 
 customer: I want to visit PHL. Can you please book my ticket from EWR? 
 agent: Sure, let me know your travelling dates please. 
 customer: My trip dates are 09/09 and 09/11. Please make sure this flight have minimum 1 connection. 
 agent: I am sorry, there is no flight available with 1 connection. 
 customer: Ok. Thank you. 
 agent: You are welcome.

A: no_flight
****
Q: customer: Hello. I am Elizabeth Lee. 
 agent: Hello, how may I aid you? 
 customer: I would like to cancel my recent reservation as my workshop got cancelled. 
 agent: Sure, please wait a moment I will check and get back to you. 
 customer: OK. 
 agent: Thanks for waiting, unfortunately there is no reservation found with your name. 
 customer: Ok, thank you for your response. 
 agent: Thanks you.

A: no_reservation
****
Q: customer: Hello. 
 agent: Hello, how can I help you? 
 customer: Can you please help me to book a flight from ATL to PHX? 
 agent: Sure, may I know the travelling dates? 
 customer: Sure, I want to travel on Jan 13 and need to return on Jan 15. 
 agent: Do you have any connection limit? 
 customer: I am looking for a flight with single connection. 
 agent: Do you have any other requirements? 
 customer: No. 
 agent: May I know your name? 
 customer: Matthew Edwards here. 
 agent: Please wait a minute. 
 customer: Sure. 
 agent: Sorry, no flights found with your chosen dates. 
 customer: Ok, not an issue. Thank you for checking. 
 agent: Thank you for availing us.

A:
no_flight
****