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: Hello, I am Brian Young. 
 agent: Hello, how may I assist you today? 
 customer: Can you please help me in booking my flight ticket from PHX to SFO for my emergency meeting with my clients. 
 agent: Sure, can you please share your travelling dates? 
 customer: My planned trip dates are June 05 to 07. 
 agent: Do you have any specifications? 
 customer: I need a connecting flight within the fare of 1000. 
 agent: We found connecting flight 1012 in AA airline with fare of 100. 
 customer: Ok, please proceed. 
 agent: Shall I proceed to book? 
 customer: Ok, proceed. 
 agent: Ok, your flight ticket has been booked. 
 customer: Thank you for your help. 
 agent: Thank you for reaching us.
A:
book