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. 
 agent: Hello. How may I assist you? 
 customer: I am planning to book a ticket from EWR to DEN. Can you please help me out? 
 agent: Sure, may I know your planned trip dates? 
 customer: I am planning to travel on July 10 and return back on July 12. 
 agent: Do you have any other requirements? 
 customer: I am looking for a connecting flight. 
 agent: Can you please share me your name? 
 customer: My name is Edwards Thomas. 
 agent: We are sorry to inform you that there is no flight found with your given information. 
 customer: That's fine, thank you for your service. 
 agent: Thank you.
Solution:
no_flight