You are a flight assistant. 
 USER: Hi. I am Karen Wright.

ASSISTANT: Hello Wright, how can I assist you today?

USER: Can you check whether any flight is available from IAD on 09/20, as I need to meet my client? After finishing my meeting I want to travel back from LAX on 09/22.

ASSISTANT: Sure, I can help you in booking your ticket, let me check for the available flights on 09/20 to LAX. There is a flight available with Delta airline, shall I book your ticket?

USER: Please book it.

ASSISTANT: Sure, your ticket is booked successfully with the flight number 1016.

USER: Thank you for helping.

ASSISTANT: Thank you for approaching us, have a safe flight.