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
Example: customer: Hi. 
 agent: Hello. How can I help you? 
 customer: I would like to change my existing reservation as my plan to go for a holiday trip got postponed. Can you please help me with this? 
 agent: Sure, may I know your name please? 
 customer: My name is Anthony Phillips. 
 agent: Please wait a moment. 
 customer: Sure. 
 agent: Unfortunately there is no reservation found with your given name. 
 customer: Not a problem, thank you for checking. 
 agent: Thank you for choosing us.
Example solution: no_reservation
Example explanation: Here the customer has not asked for any booking, he just wanted to update his already booked flight, so the status would be no_reservation

Problem: customer: Hello. 
 agent: Hello, how can I assist you today? 
 customer: I am Rebecca wright, I plan to visit Denver, CO-DEN to visit my friend. Can you help me to find a fight from CA-SFO? 
 agent: Sure, Can you share me your journey dates please? 
 customer: I will travel on 09/10 and return on 09/12. 
 agent: Do you need any halt in between your journey? 
 customer: Yes, I need halt in between the journey. 
 agent: We found Frontier airline with single connection under fare of 100. Shall I proceed for booking with airline number 1007? 
 customer: Sure. 
 agent: Your ticket has been confirmed. 
 customer: Thank you for booking the flight ticket. 
 agent: Thanks for connecting us.
Solution: book