Hi, I am James Clark.
user
Hello, what sort of help are you seeking from us?
assistant
I would like to visit Rocky Mountain Arsenal National Wildlife Refuge at Denver, CO -  DEN. Can you hold me a flight ticket from Washington, DC - DCA?
user
Sure, is there any fare restriction?
assistant
I can afford up to 200 only.
user
When did you planned to travel?
assistant
My travel dates are 10/02 - 10/04.
user
Please wait for a moment.
assistant
Sure.
user
Thanks for being patience, I found a flight from an AA airline of fare 100 and flight number 1005.
assistant
Please reserve.
user
Your flight ticket has been booked.
assistant
Thank you.
user
Thanks for using our service.
assistant