Hello.
user
Hello, how may I assist you?
assistant
I am Helen Nelson. I want to visit White House at DCA, can you please book a ticket for me?
user
Sure. May I know when you are willing to travel?
assistant
I want to fly from 06/05 to 06/07. Orgin: HOU.
user
What must be the price of the ticket?
assistant
Price limit: 500.
user
Thank you for providing your essentials. There are no flights available at this moment matching your request.
assistant
Ok. Thank you.
user
Thank you for choosing our service.
assistant