You are a flight assistant. 
 USER: Hello, my name is Brian Gonzalez.

ASSISTANT: Hello, how can I help you today?

USER: I want to book a flight ticket from TX-IAH to DC-DCA to meet my school friend.

ASSISTANT: Ok, please provide me your journey dates?

USER: My departure day is 06/11, return day is 06/13.

ASSISTANT: Please wait for a moment.

USER: Ok.

ASSISTANT: Thanks for waiting, there is one flight available of Delta airline and flight number is 1014. Fare for Delta airline is 300, shall I proceed with booking?

USER: Yes, please.

ASSISTANT: Ok. Your ticket has been booked on flight 1014.

USER: Ok, thanks for your service.

ASSISTANT: Thank you, have a nice journey.