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: Hi. 
 agent: Hello, how can I help you today? 
 customer: Can you please help me in changing my recent reservation? 
 agent: Sure, can I have your name please? 
 customer: Sure, my name is Sharon Parker. 
 agent: Ok, please wait for a while. 
 customer: Sure. 
 agent: Thanks for waiting, there is no active reservation on your given name. 
 customer: Ok, No issues. Thanks you. 
 agent: Thank you for opting us.

A: no_reservation
****
Q: customer: Hi. 
 agent: Hello, how can I help you? 
 customer: Can you please help me in booking a flight ticket to SEA from BOS? 
 agent: May I know your desired travel dates please? 
 customer: My travel dates are from Mar 03 to Mar 05. 
 agent: Do you have any specifications? 
 customer: I need a connecting flight. 
 agent: May I know your name please? 
 customer: I am Stephen Carter. 
 agent: There is a flight with connection limit 1 and fare 100, shall I proceed for booking? 
 customer: You can proceed. 
 agent: Your ticket is booked, flight number 1011 with Spirit Airlines. 
 customer: Thank you. 
 agent: Thank you for opting us.

A: book
****
Q: customer: Hello. 
 agent: Hello,. 
 customer: I am Shirley Phillips. 
 agent: How shall I assist you? 
 customer: I want to cancel my reservation due to heavy rainfall at my place. 
 agent: I'm sorry, no reservation found by name Shirley Phillips. 
 customer: Ok, thank you for informing me. 
 agent: Thanks. Have a nice day!.

A:
no_reservation
****