You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,. How can I aid you today?

USER: I am James Phillips want to travel to TX-IAH to attend food festival from DC-DCA. Can you book a direct flight?

ASSISTANT: Sure, may I know your itinerary dates?

USER: My scheduled dates are 07/14 and 07/16.

ASSISTANT: Please wait for a minute.

USER: Ok.

ASSISTANT: Thanks for being patience, no flights available with your requested travelling dates.

USER: Ok, no issues. Thank you for availing me.

ASSISTANT: Thanks for choosing us.