You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I wold like to reserve a ticket on 12/07 from LAX, could you book a flight ticket?

ASSISTANT: Sure, provide me your destination airport code?

USER: My landing airport code is IAD and returns on 12/09.

ASSISTANT: As per your given details, there is a flight in Delta airline, can I proceed with booking. May I know your name please for booking?

USER: Ok, continue to book my ticket and provide the flight details. My name is Katherine Campbell.

ASSISTANT: Sure, your ticket is confirmed booking with the flight number 1004.

USER: Thank you for booking my ticket.

ASSISTANT: Thank you for contacting us.