You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Myself Dorothy Rodriguez. I would like to travel from IAD to AUS to attend my seminar, please help me for booking flight ticket.

ASSISTANT: Sure, when would you like to travel?

USER: I would like to travel  from 07/06 to 07/08. Make sure that connection limit is 1 and price limit is 200.

ASSISTANT: Sorry Rodriguez, unfortunately there is no flight with your requested dates.

USER: Ok, it's fine. Thank you for your services.

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