You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I am Carolyn Edwards. Can you help me in booking with 1 connection limit?

ASSISTANT: Sure, please provide me your travelling dates?

USER: I would like to travel to Washington, to enjoy Fun-filled vacations. My travelling dates are from 02/07 to 02/09.

ASSISTANT: OK, share me your airport codes?

USER: My airport codes are from DCA to IAD.

ASSISTANT: There is no flight with your requirement.

USER: Ok.

ASSISTANT: Thank you, for reaching us.

USER: Not a problem. Thank you.