Detailed Instructions: 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
Problem:customer: Hello, I am Carol Adams. 
 agent: Hello, how can I assist you today? 
 customer: As I am a flower lover, I want to celebrate a flowers festival in New York, NY - EWR. Can you help me out with the booking? 
 agent: Sure, may I know your journey dates? 
 customer: I will fly on 09/29 and return on 10/01. 
 agent: Do you have any connection and price limit? 
 customer: I need a connecting flight. The price limit should be 5000. 
 agent: May I know your source code? 
 customer: My source is at Chicago, IL - ORD. 
 agent: Thanks for providing details. Please wait for a while. 
 customer: OK. 
 agent: Sorry to say that, there is no connecting flights are available regarding your information. 
 customer: Ok, not an Issue. Thanks for your service. 
 agent: Thank you, for choosing us. Have a nice day.
Solution:
no_flight