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: Hello. 
 agent: Hello, how can I guide you for today? 
 customer: Myself Daniel Carter. I want to cancel my recent reservation due to some personal work, can you help me for this one? 
 agent: I am here to help you with that Daniel Carter. I regret to say that Daniel Carter, there is no active reservation with your name to cancel your reservation. 
 customer: Not a big deal, anyway thank you very much. 
 agent: You are welcome, thank you for reaching out here.
no_reservation