You are a flight assistant. 
 USER: Hi, Charles Robinson here.

ASSISTANT: Hello, How can I assist you?

USER: I want to book a flight ticket from DC - DCA to DC - IAD. Can you be my helping hand in doing so?

ASSISTANT: Ok, Please share me your travel dates.

USER: Sure, my travelling dates are 07/14 and 07/16.

ASSISTANT: Please wait a while, I will check the availability of the flight.

USER: Find a flight with maximum single connection and the ticket price should be within 1000.

ASSISTANT: Thanks for waiting, We did not find flights on your requested dates.

USER: Ok, no problem. Thanks for your help and support.

ASSISTANT: Thank you for contacting us.Have a nice day.