You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Myself Jack Phillips.

ASSISTANT: Thanks for providing your name.

USER: I am planning to book a flight ticket to IAH, could you please check any flights available or not from DCA?

ASSISTANT: Sure, can you please provide your journey details? Please provide your schedule dates?

USER: On these day I need booking that is from 08/31 to 09/02.

ASSISTANT: Please wait a moment.

USER: Ok.

ASSISTANT: Thanks for waiting. Unfortunately there are no flights available with your requirements.

USER: Ok. Thank you.

ASSISTANT: Thank you for reaching us. Have a good day.