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
Q: customer: Hi. I am Michelle Thompson. 
 agent: Hello, how may I guide you today? 
 customer: I have to submit my research record at Houston university with my college friend from New York. Will you please help me in making an airline reservation? 
 agent: Sure, I will help you. Could you please provide me your airport codes? 
 customer: My source code is NY-EWR and destination code is TX-IAH. 
 agent: When you have planned to travel? 
 customer: My planned dates are 12/11 and 12/13. 
 agent: Kindly mention your fare limit? 
 customer: Fare limit is under 5000. 
 agent: We found a flight with Southwest airline and 1000 flight with fare 100 having a lay by. 
 customer: You can continue with booking. 
 agent: Your ticked has been confirmed. 
 customer: Thank you for your kind service. 
 agent: Thank you for picking us, have a great day.
A:
book