You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I would like to go to Washington to meet my children. Can you do the reservation?

ASSISTANT: Sure, may I know your travelling dates?

USER: My journey dates are 12/21 and 12/23.

ASSISTANT: Could you share your airport codes?

USER: My airport codes are LAS-DCA.

ASSISTANT: We found a flight on AA airline, flight number as 1002 with the fare of 200. Shall I proceed?

USER: Please carry on.

ASSISTANT: May I know your name?

USER: I am Elizabeth King.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you for availing us.