Instructions: 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
Input: customer: Hi. 
 agent: Hello. How may I aid you? 
 customer: I am Eric Lewis. Can you help me in booking from MCO to PHX? 
 agent: May I know your itinerary dates please? 
 customer: My travelling dates are from Jan 8 to Jan 10. 
 agent:  May I know your preferable journey timings? 
 customer: I want to return in the morning time. 
 agent: Is there any another specifications on your trip, so that I can arrange like that only. 
 customer: I need a connecting flight. 
 agent: I got a connecting flight-1023 in economy class, is it fine for you? 
 customer: Ok, please book it. 
 agent: Ok, booking is done on UA airlines. 
 customer: Thank you. 
 agent: Thanks for reaching us.
Output:
book