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: Hi. 
 agent: Hello. How can I assist you? 
 customer: Will you help me in booking a ticket with the name of Samantha Lewis under the price limit of 200? 
 agent: Ok, may i know your travel dates? 
 customer: I need to do some project work in Botanical Garden on 01/06. After the completion of this, I have to return on 01/08. 
 agent:  Help me with your journey points? 
 customer: Journey points are Los Angeles, LAX and PHL. 
 agent: Ok, please wait. 
 customer: Sure. 
 agent:  Sorry, no flights are available on your travel dates. 
 customer: Ok, thank you. 
 agent:  Thank you for availing us.
no_flight