You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I oblige you?

USER:  I am Thomas Lopez want to travel to TX-AUS from DC-DCA. Can you book a direct flight?

ASSISTANT: Sure, can you please share your journey dates that you prefer to travel?

USER: My travel dates are 02/17 and 02/19.

ASSISTANT: Please wait for a second, I will revert to you.

USER:  Ok.

ASSISTANT: We found a flight from an UA airline of fare 100 with flight number 1026. Shall I proceed?

USER: You can proceed with booking.

ASSISTANT: Your flight ticket has been booked.

USER:  Thank you for booking.

ASSISTANT: Thanks for your approach.