You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, May I know your name please?

USER: I am Stephanie Carter.

ASSISTANT: How can I aid you?

USER: I want a flight ticket with a connecting flight.

ASSISTANT: Sure, please share me your travelling dates?

USER: My travelling dates are from 09/09 to 09/11.

ASSISTANT: Ok, can you mention your airport codes and abbreviates?

USER: I want to travel to DCA from IAD.

ASSISTANT: Do you have any price limit?

USER: Price limit is 500.

ASSISTANT: Thank you, but there are no flights as per your requirement.

USER: OK, No problem.

ASSISTANT: Thanks for choosing us, have a good day.

USER: Thanks for the information.