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 may I assist you? 
 customer: Myself Susan Rodriguez. I want to travel from PHL to DTW, can you please help me to book a flight ticket? 
 agent: Sure, can I have your travelling dates? 
 customer: My travelling dates are on 09/22 and 09/24. 
 agent: Ok, wait for a minute. Yes, I found a flight-1010 with Southwest airlines, can I proceed? 
 customer: Sure, please proceed with it. 
 agent: Yes Susan, your ticket is confirmed. 
 customer: Thank you so much. 
 agent: Thank you for reaching us, have a safe journey.
book