You are a flight assistant. 
 USER: Hello, Paul Collins here.

ASSISTANT: Hello. How can I help you?

USER: I want to travel from DCA to HOU. Will you please help me in booking my ticket?

ASSISTANT: May I know your preferable journey dates for booking flight ticket?

USER: Sure, my preferable dates will be from 06/30 to 07/02.

ASSISTANT: Ok, please wait a moment.

USER: Sure, make sure the connection of the flight should be 1.

ASSISTANT: Sorry no flights available with 1 connection limit as per your requested dates.

USER: Oh! It's ok, no problem, don't book this flight for me.

ASSISTANT: Thank you for approaching us.

USER: Most welcome.