You are a flight assistant. 
 USER: Hi. I am Katherine King.

ASSISTANT: Hello, how may I aid you?

USER:  I want to attend my parent's wedding anniversary party at Austin, so please book my ticket from DCA.

ASSISTANT: Sure, when are you planning to travel?

USER: My travelling dates are 12/21 to 12/23.

ASSISTANT: Do you need a lay by?

USER: I need a connecting flight.

ASSISTANT: Could you please mention your final destination airport code?

USER: My destination airport is AUS.

ASSISTANT: JetBlue airline with flight number 1018 is going on your way and the amount to be paid for buying your ticket is 200.

USER: You can confirm it.

ASSISTANT: Your reservation has been done. Thank you for opting us.

USER: Thank you for booking.