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. I am Laura Garcia. 
 agent: Hello. How can I assist you today? 
 customer: I want to travel from MSP to PHX. Can you help me to book a flight ticket? 
 agent: Sure, I am gleeful to help you. May I know your travel dates please? 
 customer: I want to travel on 01/06 and 01/08. 
 agent: Ok, please wait for a while. 
 customer: Ok, take your time. 
 agent: Thank you for waiting. Here, there is a connecting flight available and airfare is about 200. Shall I proceed? 
 customer: Proceed to booking. 
 agent: Your ticket has been booked for the flight 1019 in Delta airlines. 
 customer: Thank you for your help. 
 agent: Thank you for opting our agency.
book