You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you at this moment?

USER: I am Eric Garcia.

ASSISTANT: Nice to meet you Eric.

USER: I am planning to visit Olympic national Park at Washington, could you please help me with booking a flight ticket from AUS to DCA?

ASSISTANT: Sure Eric Garcia, I am happy to help you with that. Can I have your travel dates please to get best flight for you?

USER: I would like to take off on 09/05 and return on 09/07.

ASSISTANT: Ok Eric Garcia, please be on hold for a moment to check availability of flight in your route.

USER: Sure, take your time.

ASSISTANT: I have found a flight in Frontier airlines which is having connection 1 and price of the ticket is 400. Shall I proceed with booking?

USER: Can you please check a  flight with ticket fare 200 or less?

ASSISTANT: Sure Eric Garcia, I will check with that.

USER: Thank you.

ASSISTANT: Sorry Eric Garcia, no flight is available to you on your dates under your budget.

USER: That's ok, not an issue. Anyways, thank you for the information.

ASSISTANT: Thank you for choosing us, have a good day.