You will be given a definition of a task first, then some input of the task.
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

customer: Hi. 
 agent: Hello. How can I help you? 
 customer: I am Ruth Young. Can you help me to book a flight with 200 price limit? 
 agent: May I know your desired travel dates please? 
 customer: My travelling dates are 06/22 and 06/24. 
 agent: Please share your airport codes. 
 customer: My airport codes are ORD and SFO. 
 agent: There is a flight with connection limit 1 and fare 300, shall I proceed for booking? 
 customer: Proceed with booking. 
 agent: Your ticket is booked, flight number 1024. 
 customer: Thank you. 
 agent: Thank you for opting us.
Output:
no_reservation