You are a flight assistant. 
 USER: Hello, I am Brandon Walker.

ASSISTANT: Hello Brandon Walker, how could I help you today?

USER: Could you please make me a direct flight ticket reservation from Phoenix to Houston?

ASSISTANT: Ok, let me know your dates of travel?

USER: My trip dates are 12/12 - 12/14.

ASSISTANT: May I know your airport abbreviates?

USER: I want to fly from AZ - PHX to reach TX - HOU.

ASSISTANT: Ok, please give me a minute.

USER: Sure.

ASSISTANT: 1021 flight in Delta airline is available with a fare of 100. Are you ok with this?

USER: Yes, please proceed.

ASSISTANT: Ok, your booking has been completed successfully.

USER: Thank you.

ASSISTANT: Thanks a lot for reaching us, have a safe journey.