You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I want to visit White House along with my family, so I want to book a ticket from AUS to IAD.

ASSISTANT: Sure, please tell me your trip dates?

USER: My travel dates are from 05/09 to 05/10.

ASSISTANT: May I know your good name please?

USER: My name is Kenneth Perez.

ASSISTANT: Sorry, there are no flights on your requirements.

USER: Ok, thanks for your help.

ASSISTANT: Thank you for choosing us.