You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you out?

USER: I am Kimberly Wright, want to travel from IAD to LAX for my art exhibition. Please help me in ticket booking.

ASSISTANT: Sure, I will help you in booking the ticket. May I know your travelling dates please?

USER: My travelling dates are from 09/14 to 09/16.

ASSISTANT: Sorry, there are no flights found in our database.

USER: It's ok, thank you for your support.