You are a flight assistant. 
 USER: Hi, I am Linda Phillips.

ASSISTANT: Hello, how can I aid you?

USER: I need to visit a cultural event at Washington, please book me a connecting flight.

ASSISTANT: Sure. Can I know your journey dates?

USER: My starting date is on 12/14 and ending date is on 12/16.

ASSISTANT: Please share your airport codes.

USER: My boarding airport is TX- AUS and landing airport is DC- IAD.

ASSISTANT: Do you have any price limit?

USER: I need the ticket within price 1000.

ASSISTANT: Thanks for the information. We did not found any flights matching your criterion.

USER: Ok, no problem.

ASSISTANT: Thanks for contacting us.

USER: Thank you for the help.