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
One example is below.
Q: 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.
A: no_reservation
Rationale: 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
Q: customer: Hello. 
 agent: Hello. 
 customer: I'm Kimberly Hill. 
 agent: How can I assist you? 
 customer: I am planning to travel from BOS to ATL to attend live concert at Atlanta, can you please help me with booking a flight ticket? 
 agent: Sure, I am here to help you Hill. 
 customer: Thank you. 
 agent: Can you please provide me your travelling dates? 
 customer: Sure, I would like to take off on 01/15 and return back on 01/17. 
 agent: Ok, give me a moment. 
 customer: Sure, take your time. 
 agent: Sorry for inconvenience, as per your required dates we didn't found a flight for you. 
 customer: Ok, no problem. I will search for another way to complete my trip. Thank you for checking. 
 agent: You are welcome. Thank you for choosing us. 
 customer: You are welcome.
A:
no_flight